--- _id: '2577' abstract: - lang: eng text: " In the context of the energy transition to renewables, the spotlight is on large systems connected to the power grid, but this also offers room for smaller, more specialized applications. Photovoltaics, in particular, offer the possibility of the self-sufficient supply of smaller electrical appliances on smaller scales. The idea of making previously unused surfaces usable is by no means new, and textiles such as backpacks, tent tarpaulins and other covers are particularly suitable for this purpose. In order to create a non-toxic and easily recyclable product, dye-sensitized solar cells (DSSC), which can be manufactured through electrospinning with a textile feel, are an attractive option here. Therefore, this paper investigates a needle electrospun nanofiber mat, whose spin solution contains polyacrylonitrile (PAN) dissolved in dimethyl sulfoxide (DMSO) as well es TiO2 nanoparticles. In addition to characterization, the nanofiber mat was dyed in a solution containing anthocyanins to later serve as a front electrode for a dye-sensitized solar cell. Although of lower efficiency, the DSSC provides stable results over two months of measurement.\r\n " article_type: original author: - first_name: Marius full_name: Dotter, Marius id: '242889' last_name: Dotter orcid: 0000-0001-8398-1809 - first_name: Lion Lukas full_name: Placke, Lion Lukas last_name: Placke - first_name: Jan Lukas full_name: Storck, Jan Lukas id: '221157' last_name: Storck orcid: 0000-0002-6841-8791 - first_name: Uwe full_name: Güth, Uwe last_name: Güth citation: alphadin: 'Dotter, Marius ; Placke, Lion Lukas ; Storck, Jan Lukas ; Güth, Uwe: Characterization of PAN-TiO2 Nanofiber Mats and their Application as Front Electrodes for Dye-sensitized Solar Cells. In: Tekstilec Bd. 65, University of Ljubljana (2023), Nr. 4, S. 298–306' ama: Dotter M, Placke LL, Storck JL, Güth U. Characterization of PAN-TiO2 Nanofiber Mats and their Application as Front Electrodes for Dye-sensitized Solar Cells. Tekstilec. 2023;65(4):298-306. doi:10.14502/tekstilec.65.2022081 apa: Dotter, M., Placke, L. L., Storck, J. L., & Güth, U. (2023). Characterization of PAN-TiO2 Nanofiber Mats and their Application as Front Electrodes for Dye-sensitized Solar Cells. Tekstilec, 65(4), 298–306. https://doi.org/10.14502/tekstilec.65.2022081 bibtex: '@article{Dotter_Placke_Storck_Güth_2023, title={Characterization of PAN-TiO2 Nanofiber Mats and their Application as Front Electrodes for Dye-sensitized Solar Cells}, volume={65}, DOI={10.14502/tekstilec.65.2022081}, number={4}, journal={Tekstilec}, publisher={University of Ljubljana}, author={Dotter, Marius and Placke, Lion Lukas and Storck, Jan Lukas and Güth, Uwe}, year={2023}, pages={298–306} }' chicago: 'Dotter, Marius, Lion Lukas Placke, Jan Lukas Storck, and Uwe Güth. “Characterization of PAN-TiO2 Nanofiber Mats and Their Application as Front Electrodes for Dye-Sensitized Solar Cells.” Tekstilec 65, no. 4 (2023): 298–306. https://doi.org/10.14502/tekstilec.65.2022081.' ieee: M. Dotter, L. L. Placke, J. L. Storck, and U. Güth, “Characterization of PAN-TiO2 Nanofiber Mats and their Application as Front Electrodes for Dye-sensitized Solar Cells,” Tekstilec, vol. 65, no. 4, pp. 298–306, 2023. mla: Dotter, Marius, et al. “Characterization of PAN-TiO2 Nanofiber Mats and Their Application as Front Electrodes for Dye-Sensitized Solar Cells.” Tekstilec, vol. 65, no. 4, University of Ljubljana, 2023, pp. 298–306, doi:10.14502/tekstilec.65.2022081. short: M. Dotter, L.L. Placke, J.L. Storck, U. Güth, Tekstilec 65 (2023) 298–306. date_created: 2023-03-10T14:44:25Z date_updated: 2023-05-12T08:54:45Z doi: 10.14502/tekstilec.65.2022081 file: - access_level: open_access content_type: application/pdf creator: mdotter date_created: 2023-03-10T14:42:20Z date_updated: 2023-03-10T14:42:20Z file_id: '2582' file_name: 10.14502Tekstilec2022.65.2022081.pdf file_size: 514696 relation: main_file success: 1 file_date_updated: 2023-03-10T14:42:20Z has_accepted_license: '1' intvolume: ' 65' issue: '4' keyword: - dye-sensitized solar cells (DSSC) - long-term stability - electrospinning - polyacrylonitrile (PAN) - TiO2 nanoparticles language: - iso: eng oa: '1' page: 298-306 publication: Tekstilec publication_identifier: eissn: - 2350-3696 issn: - 0351-3386 publication_status: published publisher: University of Ljubljana status: public title: Characterization of PAN-TiO2 Nanofiber Mats and their Application as Front Electrodes for Dye-sensitized Solar Cells tmp: image: /images/cc_by_sa.png legal_code_url: https://creativecommons.org/licenses/by-sa/4.0/legalcode name: Creative Commons Attribution-ShareAlike 4.0 International Public License (CC BY-SA 4.0) short: CC BY-SA (4.0) type: journal_article user_id: '216459' volume: 65 year: '2023' ... --- _id: '2019' abstract: - lang: eng text: " Electrospinning is often investigated for biotechnological applications, such as tissue engineering and cell growth in general. In many cases, three-dimensional scaffolds would be advantageous to prepare tissues in a desired shape. Some studies thus investigated 3D-printed scaffolds decorated with electrospun nanofibers. Here, we report on the influence of 3D-printed substrates on fiber orientation and diameter of a nanofiber mat, directly electrospun on conductive and isolating 3D-printed objects, and show the effect of shadowing, taking 3D-printed ears with electrospun nanofiber mats as an example for potential and direct application in tissue engineering in general.\r\n " article_number: '66' article_type: original author: - first_name: Laura full_name: Bauer, Laura last_name: Bauer - first_name: Lisa full_name: Brandstäter, Lisa last_name: Brandstäter - first_name: Mika full_name: Letmate, Mika last_name: Letmate - first_name: Manasi full_name: Palachandran, Manasi last_name: Palachandran - first_name: Fynn Ole full_name: Wadehn, Fynn Ole last_name: Wadehn - first_name: Carlotta full_name: Wolfschmidt, Carlotta last_name: Wolfschmidt - first_name: Timo full_name: Grothe, Timo id: '221330' last_name: Grothe orcid: 0000-0002-9099-4277 - first_name: Uwe full_name: Güth, Uwe last_name: Güth - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 citation: alphadin: 'Bauer, Laura ; Brandstäter, Lisa ; Letmate, Mika ; Palachandran, Manasi ; Wadehn, Fynn Ole ; Wolfschmidt, Carlotta ; Grothe, Timo ; Güth, Uwe ; u. a.: Electrospinning for the Modification of 3D Objects for the Potential Use in Tissue Engineering. In: Technologies Bd. 10, MDPI AG (2022), Nr. 3' ama: Bauer L, Brandstäter L, Letmate M, et al. Electrospinning for the Modification of 3D Objects for the Potential Use in Tissue Engineering. Technologies. 2022;10(3). doi:10.3390/technologies10030066 apa: Bauer, L., Brandstäter, L., Letmate, M., Palachandran, M., Wadehn, F. O., Wolfschmidt, C., … Ehrmann, A. (2022). Electrospinning for the Modification of 3D Objects for the Potential Use in Tissue Engineering. Technologies, 10(3). https://doi.org/10.3390/technologies10030066 bibtex: '@article{Bauer_Brandstäter_Letmate_Palachandran_Wadehn_Wolfschmidt_Grothe_Güth_Ehrmann_2022, title={Electrospinning for the Modification of 3D Objects for the Potential Use in Tissue Engineering}, volume={10}, DOI={10.3390/technologies10030066}, number={366}, journal={Technologies}, publisher={MDPI AG}, author={Bauer, Laura and Brandstäter, Lisa and Letmate, Mika and Palachandran, Manasi and Wadehn, Fynn Ole and Wolfschmidt, Carlotta and Grothe, Timo and Güth, Uwe and Ehrmann, Andrea}, year={2022} }' chicago: Bauer, Laura, Lisa Brandstäter, Mika Letmate, Manasi Palachandran, Fynn Ole Wadehn, Carlotta Wolfschmidt, Timo Grothe, Uwe Güth, and Andrea Ehrmann. “Electrospinning for the Modification of 3D Objects for the Potential Use in Tissue Engineering.” Technologies 10, no. 3 (2022). https://doi.org/10.3390/technologies10030066. ieee: L. Bauer et al., “Electrospinning for the Modification of 3D Objects for the Potential Use in Tissue Engineering,” Technologies, vol. 10, no. 3, 2022. mla: Bauer, Laura, et al. “Electrospinning for the Modification of 3D Objects for the Potential Use in Tissue Engineering.” Technologies, vol. 10, no. 3, 66, MDPI AG, 2022, doi:10.3390/technologies10030066. short: L. Bauer, L. Brandstäter, M. Letmate, M. Palachandran, F.O. Wadehn, C. Wolfschmidt, T. Grothe, U. Güth, A. Ehrmann, Technologies 10 (2022). date_created: 2022-07-14T17:39:48Z date_updated: 2024-03-27T14:01:14Z doi: 10.3390/technologies10030066 file: - access_level: open_access content_type: application/pdf creator: aehrmann date_created: 2022-07-14T17:39:01Z date_updated: 2022-07-14T17:39:01Z file_id: '2020' file_name: _2022_Bauer_Technologies10_66v2.pdf file_size: 12036821 relation: main_file success: 1 file_date_updated: 2022-07-14T17:39:01Z has_accepted_license: '1' intvolume: ' 10' issue: '3' keyword: - needleless electrospinning - poly(lactic acid) (PLA) - poly(acrylonitrile) (PAN) - nanospider - cell adhesion - cell proliferation - 3D printing language: - iso: eng oa: '1' publication: Technologies publication_identifier: eissn: - 2227-7080 publication_status: published publisher: MDPI AG quality_controlled: '1' status: public title: Electrospinning for the Modification of 3D Objects for the Potential Use in Tissue Engineering tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article urn: urn:nbn:de:hbz:bi10-20192 user_id: '216459' volume: 10 year: '2022' ... --- _id: '1081' abstract: - lang: eng text: " Polyacrylonitrile (PAN) nanofiber mats are typical precursors for carbon nanofibers. They can be fixed or even elongated during stabilization and subsequent carbonization to gain straight, mechanically robust carbon nanofibers. These processes necessitate additional equipment or are—if the nanofiber mats are just fixed at the edges—prone to resulting in the specimens breaking, due to an uneven force distribution. Hence, we showed in a previous study that electrospinning PAN on aluminum foils and stabilizing them fixed on these substrates, is a suitable solution to keep the desired morphology after stabilization and incipient carbonization. Here, we report on the influence of different metallic and semiconductor substrates on the physical and chemical properties of the nanofiber mats after stabilization and carbonization at temperatures up to 1200 °C. For stabilization on a metal substrate, an optimum stabilization temperature of slightly above 240 °C was found, approached with a heating rate of 0.25 K/min. Independent from the substrate material, SEM images revealed less defect fibers in the nanofiber mats stabilized and incipiently carbonized on a metal foil. Finally, high-temperature carbonization on different substrates is shown to allow for producing metal/carbon nano-composites.\r\n " alternative_id: - '1625' - '2650' article_number: '12' article_type: original author: - first_name: Jan Lukas full_name: Storck, Jan Lukas id: '221157' last_name: Storck orcid: 0000-0002-6841-8791 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-6841-8791/work/95037509 - first_name: Bennet full_name: Brockhagen, Bennet id: '237316' last_name: Brockhagen - first_name: Timo full_name: Grothe, Timo id: '221330' last_name: Grothe orcid: 0000-0002-9099-4277 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-9099-4277/work/94758815 - first_name: Lilia full_name: Sabantina, Lilia last_name: Sabantina - first_name: Bernhard full_name: Kaltschmidt, Bernhard last_name: Kaltschmidt - first_name: Khorolsuren full_name: Tuvshinbayar, Khorolsuren id: '222971' last_name: Tuvshinbayar - first_name: Laura full_name: Braun, Laura last_name: Braun - first_name: Ewin full_name: Tanzli, Ewin last_name: Tanzli - first_name: Andreas full_name: Hütten, Andreas last_name: Hütten - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/94758817 citation: alphadin: 'Storck, Jan Lukas ; Brockhagen, Bennet ; Grothe, Timo ; Sabantina, Lilia ; Kaltschmidt, Bernhard ; Tuvshinbayar, Khorolsuren ; Braun, Laura ; Tanzli, Ewin ; u. a.: Stabilization and Carbonization of PAN Nanofiber Mats Electrospun on Metal Substrates. In: C Bd. 7, MDPI AG (2021), Nr. 1' ama: Storck JL, Brockhagen B, Grothe T, et al. Stabilization and Carbonization of PAN Nanofiber Mats Electrospun on Metal Substrates. C. 2021;7(1). doi:10.3390/c7010012 apa: Storck, J. L., Brockhagen, B., Grothe, T., Sabantina, L., Kaltschmidt, B., Tuvshinbayar, K., … Ehrmann, A. (2021). Stabilization and Carbonization of PAN Nanofiber Mats Electrospun on Metal Substrates. C, 7(1). https://doi.org/10.3390/c7010012 bibtex: '@article{Storck_Brockhagen_Grothe_Sabantina_Kaltschmidt_Tuvshinbayar_Braun_Tanzli_Hütten_Ehrmann_2021, title={Stabilization and Carbonization of PAN Nanofiber Mats Electrospun on Metal Substrates}, volume={7}, DOI={10.3390/c7010012}, number={112}, journal={C}, publisher={MDPI AG}, author={Storck, Jan Lukas and Brockhagen, Bennet and Grothe, Timo and Sabantina, Lilia and Kaltschmidt, Bernhard and Tuvshinbayar, Khorolsuren and Braun, Laura and Tanzli, Ewin and Hütten, Andreas and Ehrmann, Andrea}, year={2021} }' chicago: Storck, Jan Lukas, Bennet Brockhagen, Timo Grothe, Lilia Sabantina, Bernhard Kaltschmidt, Khorolsuren Tuvshinbayar, Laura Braun, Ewin Tanzli, Andreas Hütten, and Andrea Ehrmann. “Stabilization and Carbonization of PAN Nanofiber Mats Electrospun on Metal Substrates.” C 7, no. 1 (2021). https://doi.org/10.3390/c7010012. ieee: J. L. Storck et al., “Stabilization and Carbonization of PAN Nanofiber Mats Electrospun on Metal Substrates,” C, vol. 7, no. 1, 2021. mla: Storck, Jan Lukas, et al. “Stabilization and Carbonization of PAN Nanofiber Mats Electrospun on Metal Substrates.” C, vol. 7, no. 1, 12, MDPI AG, 2021, doi:10.3390/c7010012. short: J.L. Storck, B. Brockhagen, T. Grothe, L. Sabantina, B. Kaltschmidt, K. Tuvshinbayar, L. Braun, E. Tanzli, A. Hütten, A. Ehrmann, C 7 (2021). date_created: 2021-05-31T18:59:11Z date_updated: 2023-10-04T13:12:28Z doi: 10.3390/c7010012 intvolume: ' 7' issue: '1' keyword: - polyacrylonitrile (PAN) - nanofibers - electrospinning - aluminum - copper - tin - titanium - silicon wafer - steel - stabilization and carbonization language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3390/c7010012 oa: '1' publication: C publication_identifier: eissn: - 2311-5629 publication_status: published publisher: MDPI AG quality_controlled: '1' status: public title: Stabilization and Carbonization of PAN Nanofiber Mats Electrospun on Metal Substrates tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: '245590' volume: 7 year: '2021' ... --- _id: '1615' abstract: - lang: eng text: " Two-dimensional structures, either periodic or random, can be classified by diverse mathematical methods. Quantitative descriptions of such surfaces, however, are scarce since bijective definitions must be found to measure unique dependency between described structures and the chosen quantitative parameters. To solve this problem, we use statistical analysis of periodic fibrous structures by Hurst exponent distributions. Although such a Hurst exponent approach was suggested some years ago, the quantitative analysis of atomic force microscopy (AFM) images of nanofiber mats in such a way was described only recently. In this paper, we discuss the influence of typical AFM image post-processing steps on the gray-scale-resolved Hurst exponent distribution. Examples of these steps are polynomial background subtraction, aligning rows, deleting horizontal errors and sharpening. Our results show that while characteristic features of these false-color images may be shifted in terms of gray-channel and Hurst exponent, they can still be used to identify AFM images and, in the next step, to quantitatively describe AFM images of nanofibrous surfaces. Such a gray-channel approach can be regarded as a simple way to include some information about the 3D structure of the image.\r\n \ " article_number: '2436' article_type: original author: - first_name: Tomasz full_name: Blachowicz, Tomasz last_name: Blachowicz - first_name: Krzysztof full_name: Domino, Krzysztof last_name: Domino - first_name: Michał full_name: Koruszowic, Michał last_name: Koruszowic - first_name: Jacek full_name: Grzybowski, Jacek last_name: Grzybowski - first_name: Tobias full_name: Böhm, Tobias last_name: Böhm - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/105571808 citation: alphadin: 'Blachowicz, Tomasz ; Domino, Krzysztof ; Koruszowic, Michał ; Grzybowski, Jacek ; Böhm, Tobias ; Ehrmann, Andrea: Statistical Analysis of Nanofiber Mat AFM Images by Gray-Scale-Resolved Hurst Exponent Distributions. In: Applied Sciences Bd. 11, MDPI AG (2021), Nr. 5' ama: Blachowicz T, Domino K, Koruszowic M, Grzybowski J, Böhm T, Ehrmann A. Statistical Analysis of Nanofiber Mat AFM Images by Gray-Scale-Resolved Hurst Exponent Distributions. Applied Sciences. 2021;11(5). doi:10.3390/app11052436 apa: Blachowicz, T., Domino, K., Koruszowic, M., Grzybowski, J., Böhm, T., & Ehrmann, A. (2021). Statistical Analysis of Nanofiber Mat AFM Images by Gray-Scale-Resolved Hurst Exponent Distributions. Applied Sciences, 11(5). https://doi.org/10.3390/app11052436 bibtex: '@article{Blachowicz_Domino_Koruszowic_Grzybowski_Böhm_Ehrmann_2021, title={Statistical Analysis of Nanofiber Mat AFM Images by Gray-Scale-Resolved Hurst Exponent Distributions}, volume={11}, DOI={10.3390/app11052436}, number={52436}, journal={Applied Sciences}, publisher={MDPI AG}, author={Blachowicz, Tomasz and Domino, Krzysztof and Koruszowic, Michał and Grzybowski, Jacek and Böhm, Tobias and Ehrmann, Andrea}, year={2021} }' chicago: Blachowicz, Tomasz, Krzysztof Domino, Michał Koruszowic, Jacek Grzybowski, Tobias Böhm, and Andrea Ehrmann. “Statistical Analysis of Nanofiber Mat AFM Images by Gray-Scale-Resolved Hurst Exponent Distributions.” Applied Sciences 11, no. 5 (2021). https://doi.org/10.3390/app11052436. ieee: T. Blachowicz, K. Domino, M. Koruszowic, J. Grzybowski, T. Böhm, and A. Ehrmann, “Statistical Analysis of Nanofiber Mat AFM Images by Gray-Scale-Resolved Hurst Exponent Distributions,” Applied Sciences, vol. 11, no. 5, 2021. mla: Blachowicz, Tomasz, et al. “Statistical Analysis of Nanofiber Mat AFM Images by Gray-Scale-Resolved Hurst Exponent Distributions.” Applied Sciences, vol. 11, no. 5, 2436, MDPI AG, 2021, doi:10.3390/app11052436. short: T. Blachowicz, K. Domino, M. Koruszowic, J. Grzybowski, T. Böhm, A. Ehrmann, Applied Sciences 11 (2021). date_created: 2022-01-01T14:26:57Z date_updated: 2022-01-01T15:01:53Z department: - _id: '103' doi: 10.3390/app11052436 intvolume: ' 11' issue: '5' keyword: - Hurst exponent distribution - random walk - atomic force microscopy (AFM) - electrospinning - poly(acrylonitrile) (PAN) language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3390/app11052436 oa: '1' publication: Applied Sciences publication_identifier: eissn: - 2076-3417 publication_status: published publisher: MDPI AG quality_controlled: '1' status: public title: Statistical Analysis of Nanofiber Mat AFM Images by Gray-Scale-Resolved Hurst Exponent Distributions tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: '223776' volume: 11 year: '2021' ... --- _id: '1617' abstract: - lang: eng text: ' Electrospinning can be used to prepare nanofibers from various polymers and polymer blends. The adhesion of nanofibers to the substrates on which they are electrospun varies greatly with the substrate material and structure. In some cases, good adhesion is desired to produce sandwich structures by electrospinning one material directly onto another. This is the case, e.g., with dye-sensitized solar cells (DSSCs). While both pure foil DSSCs and pure electrospun DSSCs have been examined, a combination of both technologies can be used to combine their advantages, e.g., the lateral strength of foils with the large surface-to-volume ratio of electrospun nanofibers. Here, we investigate the morphology and adhesion of electrospun nanofibers on different foil substrates containing materials commonly used in DSSCs, such as graphite, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) or TiO2. The results show that the foil material strongly influences the adhesion, while a plasma pretreatment of the foils showed no significant effect. Moreover, it is well known that conductive substrates can alter the morphology of nanofiber mats, both at microscopic and macroscopic levels. However, these effects could not be observed in the current study.' article_number: '249' article_type: original author: - first_name: Christian full_name: Hellert, Christian last_name: Hellert - first_name: Martin full_name: Wortmann, Martin last_name: Wortmann - first_name: Natalie full_name: Frese, Natalie last_name: Frese - first_name: Georg full_name: Grötsch, Georg last_name: Grötsch - first_name: Carsten full_name: Cornelißen, Carsten last_name: Cornelißen - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/105571772 citation: alphadin: 'Hellert, Christian ; Wortmann, Martin ; Frese, Natalie ; Grötsch, Georg ; Cornelißen, Carsten ; Ehrmann, Andrea: Adhesion of Electrospun Poly(acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates. In: Coatings Bd. 11, MDPI AG (2021), Nr. 2' ama: Hellert C, Wortmann M, Frese N, Grötsch G, Cornelißen C, Ehrmann A. Adhesion of Electrospun Poly(acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates. Coatings. 2021;11(2). doi:10.3390/coatings11020249 apa: Hellert, C., Wortmann, M., Frese, N., Grötsch, G., Cornelißen, C., & Ehrmann, A. (2021). Adhesion of Electrospun Poly(acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates. Coatings, 11(2). https://doi.org/10.3390/coatings11020249 bibtex: '@article{Hellert_Wortmann_Frese_Grötsch_Cornelißen_Ehrmann_2021, title={Adhesion of Electrospun Poly(acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates}, volume={11}, DOI={10.3390/coatings11020249}, number={2249}, journal={Coatings}, publisher={MDPI AG}, author={Hellert, Christian and Wortmann, Martin and Frese, Natalie and Grötsch, Georg and Cornelißen, Carsten and Ehrmann, Andrea}, year={2021} }' chicago: Hellert, Christian, Martin Wortmann, Natalie Frese, Georg Grötsch, Carsten Cornelißen, and Andrea Ehrmann. “Adhesion of Electrospun Poly(Acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates.” Coatings 11, no. 2 (2021). https://doi.org/10.3390/coatings11020249. ieee: C. Hellert, M. Wortmann, N. Frese, G. Grötsch, C. Cornelißen, and A. Ehrmann, “Adhesion of Electrospun Poly(acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates,” Coatings, vol. 11, no. 2, 2021. mla: Hellert, Christian, et al. “Adhesion of Electrospun Poly(Acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates.” Coatings, vol. 11, no. 2, 249, MDPI AG, 2021, doi:10.3390/coatings11020249. short: C. Hellert, M. Wortmann, N. Frese, G. Grötsch, C. Cornelißen, A. Ehrmann, Coatings 11 (2021). date_created: 2022-01-01T14:28:54Z date_updated: 2022-01-01T15:01:07Z department: - _id: '103' doi: 10.3390/coatings11020249 intvolume: ' 11' issue: '2' keyword: - electrospinning - polyacrylonitrile (PAN) - nanofibers - conductive foils - adhesion - dye-sensitized solar cells (DSSCs) - fiber orientation language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.3390/coatings11020249 oa: '1' publication: Coatings publication_identifier: eissn: - 2079-6412 publication_status: published publisher: MDPI AG quality_controlled: '1' status: public title: Adhesion of Electrospun Poly(acrylonitrile) Nanofibers on Conductive and Isolating Foil Substrates tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: '223776' volume: 11 year: '2021' ... --- _id: '670' abstract: - lang: eng text: Polyacrylonitrile (PAN) nanofibers, prepared by electrospinning, are often used as a precursor for carbon nanofibers. The thermal carbonization process necessitates a preceding oxidative stabilization, which is usually performed thermally, i.e., by carefully heating the electrospun nanofibers in an oven. One of the typical problems occurring during this process is a strong deformation of the fiber morphologies—the fibers become thicker and shorter, and show partly undesired conglutinations. This problem can be solved by stretching the nanofiber mat during thermal treatment, which, on the other hand, can lead to breakage of the nanofiber mat. In a previous study, we have shown that the electrospinning of PAN on aluminum foils and the subsequent stabilization of this substrate is a simple method for retaining the fiber morphology without breaking the nanofiber mat. Here, we report on the impact of different aluminum foils on the physical and chemical properties of stabilized PAN nanofibers mats, and on the following incipient carbonization process at a temperature of max. 600 °C, i.e., below the melting temperature of aluminum. article_number: '55' article_type: original author: - first_name: Jan Lukas full_name: Storck, Jan Lukas id: '221157' last_name: Storck orcid: 0000-0002-6841-8791 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-6841-8791/work/95037502 - first_name: Timo full_name: Grothe, Timo id: '221330' last_name: Grothe orcid: 0000-0002-9099-4277 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-9099-4277/work/94763647 - first_name: Khorolsuren full_name: Tuvshinbayar, Khorolsuren last_name: Tuvshinbayar - first_name: Elise full_name: Diestelhorst, Elise last_name: Diestelhorst - first_name: Daria full_name: Wehlage, Daria last_name: Wehlage - first_name: Bennet full_name: Brockhagen, Bennet id: '237316' last_name: Brockhagen - first_name: Martin full_name: Wortmann, Martin last_name: Wortmann - first_name: Natalie full_name: Frese, Natalie last_name: Frese - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/94763648 citation: alphadin: 'Storck, Jan Lukas ; Grothe, Timo ; Tuvshinbayar, Khorolsuren ; Diestelhorst, Elise ; Wehlage, Daria ; Brockhagen, Bennet ; Wortmann, Martin ; Frese, Natalie ; u. a.: Stabilization and Incipient Carbonization of Electrospun Polyacrylonitrile Nanofibers Fixated on Aluminum Substrates. In: Fibers Bd. 8 (2020), Nr. 9' ama: Storck JL, Grothe T, Tuvshinbayar K, et al. Stabilization and Incipient Carbonization of Electrospun Polyacrylonitrile Nanofibers Fixated on Aluminum Substrates. Fibers. 2020;8(9). doi:10.3390/fib8090055 apa: Storck, J. L., Grothe, T., Tuvshinbayar, K., Diestelhorst, E., Wehlage, D., Brockhagen, B., … Ehrmann, A. (2020). Stabilization and Incipient Carbonization of Electrospun Polyacrylonitrile Nanofibers Fixated on Aluminum Substrates. Fibers, 8(9). https://doi.org/10.3390/fib8090055 bibtex: '@article{Storck_Grothe_Tuvshinbayar_Diestelhorst_Wehlage_Brockhagen_Wortmann_Frese_Ehrmann_2020, title={Stabilization and Incipient Carbonization of Electrospun Polyacrylonitrile Nanofibers Fixated on Aluminum Substrates}, volume={8}, DOI={10.3390/fib8090055}, number={955}, journal={Fibers}, author={Storck, Jan Lukas and Grothe, Timo and Tuvshinbayar, Khorolsuren and Diestelhorst, Elise and Wehlage, Daria and Brockhagen, Bennet and Wortmann, Martin and Frese, Natalie and Ehrmann, Andrea}, year={2020} }' chicago: Storck, Jan Lukas, Timo Grothe, Khorolsuren Tuvshinbayar, Elise Diestelhorst, Daria Wehlage, Bennet Brockhagen, Martin Wortmann, Natalie Frese, and Andrea Ehrmann. “Stabilization and Incipient Carbonization of Electrospun Polyacrylonitrile Nanofibers Fixated on Aluminum Substrates.” Fibers 8, no. 9 (2020). https://doi.org/10.3390/fib8090055. ieee: J. L. Storck et al., “Stabilization and Incipient Carbonization of Electrospun Polyacrylonitrile Nanofibers Fixated on Aluminum Substrates,” Fibers, vol. 8, no. 9, 2020. mla: Storck, Jan Lukas, et al. “Stabilization and Incipient Carbonization of Electrospun Polyacrylonitrile Nanofibers Fixated on Aluminum Substrates.” Fibers, vol. 8, no. 9, 55, 2020, doi:10.3390/fib8090055. short: J.L. Storck, T. Grothe, K. Tuvshinbayar, E. Diestelhorst, D. Wehlage, B. Brockhagen, M. Wortmann, N. Frese, A. Ehrmann, Fibers 8 (2020). date_created: 2021-01-03T16:53:15Z date_updated: 2023-03-10T14:48:55Z department: - _id: '103' doi: 10.3390/fib8090055 file: - access_level: open_access content_type: application/pdf creator: aehrmann date_created: 2021-01-03T16:52:49Z date_updated: 2021-01-03T16:52:49Z file_id: '671' file_name: _2020_Storck_Fibers8_55.pdf file_size: 5772252 relation: main_file success: 1 file_date_updated: 2021-01-03T16:52:49Z funded_apc: '1' has_accepted_license: '1' intvolume: ' 8' issue: '9' keyword: - polyacrylonitrile (PAN) - nanofibers - electrospinning - stabilization - carbonization language: - iso: eng oa: '1' publication: Fibers publication_identifier: issn: - 2079-6439 publication_status: published quality_controlled: '1' status: public title: Stabilization and Incipient Carbonization of Electrospun Polyacrylonitrile Nanofibers Fixated on Aluminum Substrates type: journal_article user_id: '221157' volume: 8 year: '2020' ... --- _id: '680' abstract: - lang: eng text: Polyacrylonitrile (PAN) belongs to the group of polymers that are often used for electrospinning, as it can be applied as a pre-cursor for carbon nanofibers and is spinnable from the low-toxic solvent dimethyl sulfoxide (DMSO). While the influence of different spinning parameters on fibre morphology and mass per unit area was investigated in a previous study, here we report on the impact of the spinning solution, using DMSO as a solvent and wire-based (needleless) electrospinning. Our results show that a broad range of solid contents can be applied, providing the opportunity to tailor the fibre diameter distribution or to optimize the areal weight of the nanofibrous mat by changing this parameter, while the chemical composition of the fibres remains identical. article_type: original author: - first_name: Timo full_name: Grothe, Timo id: '221330' last_name: Grothe orcid: 0000-0002-9099-4277 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-9099-4277/work/94763664 - first_name: Jan Lukas full_name: Storck, Jan Lukas id: '221157' last_name: Storck orcid: 0000-0002-6841-8791 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-6841-8791/work/95037494 - first_name: Marius full_name: Dotter, Marius id: '242889' last_name: Dotter orcid: 0000-0001-8398-1809 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0001-8398-1809/work/95141265 - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/94763666 citation: alphadin: 'Grothe, Timo ; Storck, Jan Lukas ; Dotter, Marius ; Ehrmann, Andrea: Impact of solid content in the electrospinning solution on the physical and chemical properties of polyacrylonitrile (PAN) nanofibrous mats. In: Tekstilec Bd. 63 (2020), Nr. 3, S. 225–232' ama: Grothe T, Storck JL, Dotter M, Ehrmann A. Impact of solid content in the electrospinning solution on the physical and chemical properties of polyacrylonitrile (PAN) nanofibrous mats. Tekstilec. 2020;63(3):225-232. doi:10.14502/Tekstilec2020.63.225-232 apa: Grothe, T., Storck, J. L., Dotter, M., & Ehrmann, A. (2020). Impact of solid content in the electrospinning solution on the physical and chemical properties of polyacrylonitrile (PAN) nanofibrous mats. Tekstilec, 63(3), 225–232. https://doi.org/10.14502/Tekstilec2020.63.225-232 bibtex: '@article{Grothe_Storck_Dotter_Ehrmann_2020, title={Impact of solid content in the electrospinning solution on the physical and chemical properties of polyacrylonitrile (PAN) nanofibrous mats}, volume={63}, DOI={10.14502/Tekstilec2020.63.225-232}, number={3}, journal={Tekstilec}, author={Grothe, Timo and Storck, Jan Lukas and Dotter, Marius and Ehrmann, Andrea}, year={2020}, pages={225–232} }' chicago: 'Grothe, Timo, Jan Lukas Storck, Marius Dotter, and Andrea Ehrmann. “Impact of Solid Content in the Electrospinning Solution on the Physical and Chemical Properties of Polyacrylonitrile (PAN) Nanofibrous Mats.” Tekstilec 63, no. 3 (2020): 225–32. https://doi.org/10.14502/Tekstilec2020.63.225-232.' ieee: T. Grothe, J. L. Storck, M. Dotter, and A. Ehrmann, “Impact of solid content in the electrospinning solution on the physical and chemical properties of polyacrylonitrile (PAN) nanofibrous mats,” Tekstilec, vol. 63, no. 3, pp. 225–232, 2020. mla: Grothe, Timo, et al. “Impact of Solid Content in the Electrospinning Solution on the Physical and Chemical Properties of Polyacrylonitrile (PAN) Nanofibrous Mats.” Tekstilec, vol. 63, no. 3, 2020, pp. 225–32, doi:10.14502/Tekstilec2020.63.225-232. short: T. Grothe, J.L. Storck, M. Dotter, A. Ehrmann, Tekstilec 63 (2020) 225–232. date_created: 2021-01-03T17:50:46Z date_updated: 2021-06-08T06:54:30Z department: - _id: '103' doi: 10.14502/Tekstilec2020.63.225-232 file: - access_level: open_access content_type: application/pdf creator: aehrmann date_created: 2021-01-03T17:49:47Z date_updated: 2021-01-03T17:49:47Z file_id: '681' file_name: _2020_Grothe_Tekstilec63_225-232.pdf file_size: 347781 relation: main_file success: 1 file_date_updated: 2021-01-03T17:49:47Z has_accepted_license: '1' intvolume: ' 63' issue: '3' keyword: - needleless electrospinning - polyacrylonitrile (PAN) - nanofibrous mat - dimethyl sulfoxide (DMSO) - Fourier-transform infrared (FTIR) spectroscopy language: - iso: eng oa: '1' page: 225-232 publication: Tekstilec publication_status: published quality_controlled: '1' status: public title: Impact of solid content in the electrospinning solution on the physical and chemical properties of polyacrylonitrile (PAN) nanofibrous mats type: journal_article user_id: '237837' volume: 63 year: '2020' ... --- _id: '643' abstract: - lang: eng text: 'Electrospun polyacrylonitrile (PAN) nanofi brous mats belong to typical precursor materials of carbon nanofibres. They have, however, the problem that they need to be fixed or even stretched during stabilisation and ideally also during carbonisation in order to avoid undesired conglutinations and deformations of the original nanofibre morphology, resulting in brittle behaviour of the macroscopic nanofibrous mat, which impedes several applications. In an earlier investigation, blending PAN with ZnO was shown to increase fibre diameters and lead to unproblematic stabilisation and carbonisation of nanofibrous mats. ZnO, on the other hand, may have a negative impact on biotechnological applications such as tissue engineering. Here, we thus report on the morphological and chemical modifi cations due to blending PAN electrospinning solutions with different amounts of casein. By optimising the PAN : casein ratio, relatively thick, straight nanofibres are obtained, which can be stabilised and carbonised unambiguously, without the well-known negative impact on cell adhesion due to the addition of ZnO.' article_type: original author: - first_name: Elise full_name: Diestelhorst, Elise last_name: Diestelhorst - first_name: Fjoralba full_name: Mance, Fjoralba last_name: Mance - first_name: Al full_name: Mamun, Al last_name: Mamun - first_name: Andrea full_name: Ehrmann, Andrea last_name: Ehrmann date_created: 2021-01-03T14:51:09Z date_updated: 2021-01-18T15:32:28Z ddc: - '620' department: - _id: '103' doi: 10.14502/tekstilec2020.63.38-49 file: - access_level: open_access content_type: application/pdf creator: aehrmann date_created: 2021-01-03T14:48:57Z date_updated: 2021-01-03T14:48:57Z file_id: '644' file_name: _2020_Diestelhorst_Tekstilec63_38-49.pdf file_size: 1360869 relation: main_file success: 1 file_date_updated: 2021-01-03T14:48:57Z has_accepted_license: '1' intvolume: ' 63' issue: '1' keyword: - electrospinning - polyacrylonitrile (PAN) - casein - nanofibrous mat - stabilisation - carbonisation - tissue engineering language: - iso: eng oa: '1' page: 38-49 publication: TEKSTILEC publication_identifier: issn: - 0351-3386 - 2350-3696 publication_status: published quality_controlled: '1' status: public title: Chemical and Morphological Modification of PAN Nanofibrous Mats with Addition of Casein after type: journal_article user_id: '223776' volume: 63 year: '2020' ... --- _id: '660' abstract: - lang: eng text: The image processing of pictures from fibres and fibrous materials facilitates the investigation of diverse geometrical properties, such as yarn hairiness, fibre bifurcations or fibre lengths and diameters. Such irregular sample sets are naturally suitable to the statistical examination of images, using a random-walk algorithm. This results in the calculation of the so-called Hurst exponent, which is the asymptotic scaling exponent of the mean squared displacement of the walker’s position. Previous investigations have proven the appropriateness of this method for examinations of diff erent fibres, yarns and textile fabrics. In a recent study, we used AFM (atomic force microscopy) images, split into different greyscales, to analyse and quantify differences between various nanofibre mats created from polyacrylonitrile. In addition to the strong influence of the nanofibre diameters, a certain impact of the AFM settings was also seen and must be taken into account in future research. article_type: original author: - first_name: Tomasz full_name: Blachowicz, Tomasz last_name: Blachowicz - first_name: Tobias full_name: Böhm, Tobias last_name: Böhm - first_name: Jacek full_name: Grzybowski, Jacek last_name: Grzybowski - first_name: Krzysztof full_name: Domino, Krzysztof last_name: Domino - first_name: Andrea full_name: Ehrmann, Andrea last_name: Ehrmann date_created: 2021-01-03T16:38:38Z date_updated: 2021-01-18T15:32:28Z ddc: - '620' department: - _id: '103' doi: 10.14502/tekstilec2020.63.94-103 file: - access_level: open_access content_type: application/pdf creator: aehrmann date_created: 2021-01-03T16:36:37Z date_updated: 2021-01-03T16:36:37Z file_id: '661' file_name: _2020_Blachowicz_Tekstilec63-104-112.pdf file_size: 434954 relation: main_file success: 1 file_date_updated: 2021-01-03T16:36:37Z has_accepted_license: '1' intvolume: ' 63' issue: '2' keyword: - electrospinning - polyacrylonitrile (PAN) - nanofibrous mat - atomic force microscopy (AFM) - Hurst exponent - random walk language: - iso: eng oa: '1' page: 94-103 publication: TEKSTILEC publication_identifier: issn: - 0351-3386 - 2350-3696 publication_status: published quality_controlled: '1' status: public title: Evaluation of Mechanical and Physical Characteristics of Eco blended Melange Yarns type: journal_article user_id: '223776' volume: 63 year: '2020' ... --- _id: '664' abstract: - lang: eng text: Thermally stabilized and subsequently carbonized nanofibers are a promising material for many technical applications in fields such as tissue engineering or energy storage. They can be obtained from a variety of different polymer precursors via electrospinning. While some methods have been tested for post-carbonization doping of nanofibers with the desired ingredients, very little is known about carbonization of blend nanofibers from two or more polymeric precursors. In this paper, we report on the preparation, thermal treatment and resulting properties of poly(acrylonitrile) (PAN)/poly(vinylidene fluoride) (PVDF) blend nanofibers produced by wire-based electrospinning of binary polymer solutions. Using a wide variety of spectroscopic, microscopic and thermal characterization methods, the chemical and morphological transition during oxidative stabilization (280 °C) and incipient carbonization (500 °C) was thoroughly investigated. Both PAN and PVDF precursor polymers were detected and analyzed qualitatively and quantitatively during all stages of thermal treatment. Compared to pure PAN nanofibers, the blend nanofibers showed increased fiber diameters, strong reduction of undesired morphological changes during oxidative stabilization and increased conductivity after carbonization. article_number: '1210' article_type: original author: - first_name: Martin full_name: Wortmann, Martin last_name: Wortmann - first_name: Natalie full_name: Frese, Natalie last_name: Frese - first_name: Al full_name: Mamun, Al last_name: Mamun - first_name: Marah full_name: Trabelsi, Marah last_name: Trabelsi - first_name: Waldemar full_name: Keil, Waldemar last_name: Keil - first_name: Björn full_name: Büker, Björn last_name: Büker - first_name: Ali full_name: Javed, Ali last_name: Javed - first_name: Michael full_name: Tiemann, Michael last_name: Tiemann - first_name: Elmar full_name: Moritzer, Elmar last_name: Moritzer - first_name: Andrea full_name: Ehrmann, Andrea last_name: Ehrmann - first_name: Andreas full_name: Hütten, Andreas last_name: Hütten - first_name: Claudia full_name: Schmidt, Claudia last_name: Schmidt - first_name: Armin full_name: Gölzhäuser, Armin last_name: Gölzhäuser - first_name: Bruno full_name: Hüsgen, Bruno last_name: Hüsgen - first_name: Lilia full_name: Sabantina, Lilia last_name: Sabantina date_created: 2021-01-03T16:44:09Z date_updated: 2021-01-18T15:32:28Z ddc: - '620' department: - _id: '103' doi: 10.3390/nano10061210 file: - access_level: open_access content_type: application/pdf creator: aehrmann date_created: 2021-01-03T16:43:37Z date_updated: 2021-01-03T16:43:37Z file_id: '665' file_name: _2020_Wortmann_Nanomaterials10_1210.pdf file_size: 10963886 relation: main_file success: 1 file_date_updated: 2021-01-03T16:43:37Z funded_apc: '1' has_accepted_license: '1' intvolume: ' 10' issue: '6' keyword: - electrospinning - carbon nanofiber - polymer blend - stabilization - carbonization - poly(acrylonitrile) (PAN) - poly(vinylidene fluoride) (PVDF) language: - iso: eng oa: '1' publication: Nanomaterials publication_identifier: issn: - 2079-4991 publication_status: published quality_controlled: '1' status: public title: Chemical and Morphological Transition of Poly(acrylonitrile)/Poly(vinylidene Fluoride) Blend Nanofibers during Oxidative Stabilization and Incipient Carbonization type: journal_article user_id: '223776' volume: 10 year: '2020' ... --- _id: '573' abstract: - lang: eng text: Polyacrylonitrile belongs to the most often used precursors for carbon fibers. Using electrospinning, polyacrylonitrile nanofiber mats can be prepared and afterwards stabilized and carbonized to prepare carbon nanofiber mats which, by adding other materials, will be useful for several applications. One of these materials is TiO2, which has photocatalytic properties and can thus be used as a photocatalyst for photodegradation of dyes. Here, we report on a detailed study of electrospinning, stabilization, and carbonization of electrospun polyacrylonitrile/TiO2 mats with varying TiO2 content. Depending on the amount of TiO2 in the nanofibers, the fiber morphology changes strongly, indicating an upper limit for the preparation of carbon/TiO2 nanofibers with smooth surface, but offering an even increased inner surface of the rougher carbon/TiO2 nanofibers with increased TiO2 content due to better maintenance of the fibrous structure during stabilization. article_type: original author: - first_name: Lilia full_name: Sabantina, Lilia last_name: Sabantina - first_name: Robin full_name: Böttjer, Robin last_name: Böttjer - first_name: Daria full_name: Wehlage, Daria last_name: Wehlage - first_name: Timo full_name: Grothe, Timo id: '221330' last_name: Grothe orcid: 0000-0002-9099-4277 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-9099-4277/work/94763731 - first_name: Michaela full_name: Klöcker, Michaela last_name: Klöcker - first_name: Francisco José full_name: García-Mateos, Francisco José last_name: García-Mateos - first_name: José full_name: Rodríguez-Mirasol, José last_name: Rodríguez-Mirasol - first_name: Tomás full_name: Cordero, Tomás last_name: Cordero - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/94763733 citation: alphadin: 'Sabantina, Lilia ; Böttjer, Robin ; Wehlage, Daria ; Grothe, Timo ; Klöcker, Michaela ; García-Mateos, Francisco José ; Rodríguez-Mirasol, José ; Cordero, Tomás ; u. a.: Morphological study of stabilization and carbonization of polyacrylonitrile/TiO2 nanofiber mats. In: Journal of Engineered Fibers and Fabrics Bd. 14 (2019), S. 1–8' ama: Sabantina L, Böttjer R, Wehlage D, et al. Morphological study of stabilization and carbonization of polyacrylonitrile/TiO2 nanofiber mats. Journal of Engineered Fibers and Fabrics. 2019;14:1-8. doi:10.1177/1558925019862242 apa: Sabantina, L., Böttjer, R., Wehlage, D., Grothe, T., Klöcker, M., García-Mateos, F. J., … Ehrmann, A. (2019). Morphological study of stabilization and carbonization of polyacrylonitrile/TiO2 nanofiber mats. Journal of Engineered Fibers and Fabrics, 14, 1–8. https://doi.org/10.1177/1558925019862242 bibtex: '@article{Sabantina_Böttjer_Wehlage_Grothe_Klöcker_García-Mateos_Rodríguez-Mirasol_Cordero_Ehrmann_2019, title={ Morphological study of stabilization and carbonization of polyacrylonitrile/TiO2 nanofiber mats}, volume={14}, DOI={10.1177/1558925019862242}, journal={Journal of Engineered Fibers and Fabrics}, author={Sabantina, Lilia and Böttjer, Robin and Wehlage, Daria and Grothe, Timo and Klöcker, Michaela and García-Mateos, Francisco José and Rodríguez-Mirasol, José and Cordero, Tomás and Ehrmann, Andrea}, year={2019}, pages={1–8} }' chicago: 'Sabantina, Lilia, Robin Böttjer, Daria Wehlage, Timo Grothe, Michaela Klöcker, Francisco José García-Mateos, José Rodríguez-Mirasol, Tomás Cordero, and Andrea Ehrmann. “ Morphological Study of Stabilization and Carbonization of Polyacrylonitrile/TiO2 Nanofiber Mats.” Journal of Engineered Fibers and Fabrics 14 (2019): 1–8. https://doi.org/10.1177/1558925019862242.' ieee: L. Sabantina et al., “ Morphological study of stabilization and carbonization of polyacrylonitrile/TiO2 nanofiber mats,” Journal of Engineered Fibers and Fabrics, vol. 14, pp. 1–8, 2019. mla: Sabantina, Lilia, et al. “ Morphological Study of Stabilization and Carbonization of Polyacrylonitrile/TiO2 Nanofiber Mats.” Journal of Engineered Fibers and Fabrics, vol. 14, 2019, pp. 1–8, doi:10.1177/1558925019862242. short: L. Sabantina, R. Böttjer, D. Wehlage, T. Grothe, M. Klöcker, F.J. García-Mateos, J. Rodríguez-Mirasol, T. Cordero, A. Ehrmann, Journal of Engineered Fibers and Fabrics 14 (2019) 1–8. date_created: 2019-07-09T18:04:37Z date_updated: 2021-06-01T09:09:50Z department: - _id: '103' doi: 10.1177/1558925019862242 file: - access_level: open_access content_type: application/pdf creator: aehrmann date_created: 2019-07-09T18:03:14Z date_updated: 2019-07-09T18:03:14Z file_id: '574' file_name: _2019_Sabantina_JEFF14_1-8.pdf file_size: 1859126 relation: main_file success: 1 file_date_updated: 2019-07-09T18:03:14Z has_accepted_license: '1' intvolume: ' 14' keyword: - Polyacrylonitrile - PAN - TiO2 - nanofiber mat - electrospinning - composite - stabilization - carbonization language: - iso: eng oa: '1' page: 1-8 publication: Journal of Engineered Fibers and Fabrics publication_status: published quality_controlled: '1' status: public title: ' Morphological study of stabilization and carbonization of polyacrylonitrile/TiO2 nanofiber mats' type: journal_article user_id: '237837' volume: 14 year: '2019' ... --- _id: '522' abstract: - lang: eng text: 'Electrospinning can be used to produce nanofiber mats. One of the often used polymers for electrospinning is polyacrylonitrile (PAN), especially for the production of carbon nanofibers, but also for a diverse number of other applications. For some of these applications—e.g., creation of nano-filters—the dimensional stability of the nanofiber mats is crucial. While relaxation processes—especially dry, wet and washing relaxation—are well-known and often investigated for knitted fabrics, the dimensional stability of nanofiber mats has not yet been investigated. Here we report on the wet relaxation of PAN nanofiber mats, which are dependent on spinning and solution parameters such as: voltage, electrode distance, nanofiber mat thickness, and solid content in the solution. Our results show that wet relaxation has a significant effect on the samples, resulting in a dimensional change that has to be taken into account for nanofiber mats in wet applications. While the first and second soaking in pure water resulted in an increase of the nanofiber mat area up to approximately 5%, the dried sample, after the second soaking, conversely showed an area reduced by a maximum of 5%. For soaking in soap water, small areal decreases between approximately 1–4% were measured.' article_number: '23' article_type: original author: - first_name: Timo full_name: Grothe, Timo id: '221330' last_name: Grothe orcid: 0000-0002-9099-4277 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0002-9099-4277/work/94763690 - first_name: Lilia full_name: Sabantina, Lilia last_name: Sabantina - first_name: Michaela full_name: Klöcker, Michaela last_name: Klöcker - first_name: Irén full_name: Juhász Junger, Irén last_name: Juhász Junger - first_name: Christoph full_name: Döpke, Christoph last_name: Döpke - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/94763691 citation: alphadin: 'Grothe, Timo ; Sabantina, Lilia ; Klöcker, Michaela ; Juhász Junger, Irén ; Döpke, Christoph ; Ehrmann, Andrea: Wet relaxation of electrospun nanofiber mats. In: Technologies Bd. 7 (2019), Nr. 1' ama: Grothe T, Sabantina L, Klöcker M, Juhász Junger I, Döpke C, Ehrmann A. Wet relaxation of electrospun nanofiber mats. Technologies . 2019;7(1). doi:10.3390/technologies7010023 apa: Grothe, T., Sabantina, L., Klöcker, M., Juhász Junger, I., Döpke, C., & Ehrmann, A. (2019). Wet relaxation of electrospun nanofiber mats. Technologies , 7(1). https://doi.org/10.3390/technologies7010023 bibtex: '@article{Grothe_Sabantina_Klöcker_Juhász Junger_Döpke_Ehrmann_2019, title={Wet relaxation of electrospun nanofiber mats}, volume={7}, DOI={10.3390/technologies7010023}, number={123}, journal={Technologies }, author={Grothe, Timo and Sabantina, Lilia and Klöcker, Michaela and Juhász Junger, Irén and Döpke, Christoph and Ehrmann, Andrea}, year={2019} }' chicago: Grothe, Timo, Lilia Sabantina, Michaela Klöcker, Irén Juhász Junger, Christoph Döpke, and Andrea Ehrmann. “Wet Relaxation of Electrospun Nanofiber Mats.” Technologies 7, no. 1 (2019). https://doi.org/10.3390/technologies7010023. ieee: T. Grothe, L. Sabantina, M. Klöcker, I. Juhász Junger, C. Döpke, and A. Ehrmann, “Wet relaxation of electrospun nanofiber mats,” Technologies , vol. 7, no. 1, 2019. mla: Grothe, Timo, et al. “Wet Relaxation of Electrospun Nanofiber Mats.” Technologies , vol. 7, no. 1, 23, 2019, doi:10.3390/technologies7010023. short: T. Grothe, L. Sabantina, M. Klöcker, I. Juhász Junger, C. Döpke, A. Ehrmann, Technologies 7 (2019). date_created: 2019-05-30T20:43:16Z date_updated: 2021-06-01T09:09:00Z department: - _id: '103' doi: 10.3390/technologies7010023 file: - access_level: open_access content_type: application/pdf creator: aehrmann date_created: 2019-05-30T20:43:03Z date_updated: 2019-05-30T20:43:03Z file_id: '523' file_name: _2019_Grothe_technologies7_23.pdf file_size: 3341045 relation: main_file file_date_updated: 2019-05-30T20:43:03Z funded_apc: '1' has_accepted_license: '1' intvolume: ' 7' issue: '1' keyword: - electrospinning - filter - wet relaxation - dimensions - polyacrylonitrile (PAN) language: - iso: eng oa: '1' publication: 'Technologies ' publication_status: published quality_controlled: '1' status: public title: Wet relaxation of electrospun nanofiber mats type: journal_article user_id: '237837' volume: 7 year: '2019' ... --- _id: '570' abstract: - lang: eng text: 'TiO2 is a semiconductor that is commonly used in dye-sensitized solar cells (DSSCs). However, the necessity of sintering the TiO2 layer is usually problematic due to the desired temperatures of typically 500 °C in cells that are prepared on polymeric or textile electrodes. This is why textile-based DSSCs often use metal fibers or metallic woven fabrics as front electrodes on which the TiO2 is coated. Alternatively, several research groups investigate the possibilities to reduce the necessary sintering temperatures by chemical or other pre-treatments of the TiO2. Here, we report on a simple method to avoid the sintering step by using a nanofiber mat as a matrix embedding TiO2 nanoparticles. The TiO2 layer can be dyed with natural dyes, resulting in a similar bathochromic shift of the UV/Vis spectrum, as it is known from sintered TiO2 on glass substrates, which indicates an equivalent chemical bonding. Our results indicate a new possibility for producing textile-based DSSCs with TiO2, even on textile fabrics that are not high-temperature resistant. ' article_number: '60' article_type: original author: - first_name: Andrea full_name: Ehrmann, Andrea id: '223776' last_name: Ehrmann orcid: 0000-0003-0695-3905 - first_name: Al full_name: Mamun, Al last_name: Mamun - first_name: Marah full_name: Trabelsi, Marah last_name: Trabelsi - first_name: Michaela full_name: Klöcker, Michaela last_name: Klöcker - first_name: Lilia full_name: Sabantina, Lilia last_name: Sabantina - first_name: Christina full_name: Großerhode, Christina last_name: Großerhode - first_name: Tomasz full_name: Blachowicz, Tomasz last_name: Blachowicz - first_name: Georg full_name: Grötsch, Georg last_name: Grötsch - first_name: Carsten full_name: Cornelißen, Carsten last_name: Cornelißen - first_name: Almuth full_name: Streitenberger, Almuth last_name: Streitenberger citation: alphadin: 'Ehrmann, Andrea ; Mamun, Al ; Trabelsi, Marah ; Klöcker, Michaela ; Sabantina, Lilia ; Großerhode, Christina ; Blachowicz, Tomasz ; Grötsch, Georg ; u. a.: Electrospun nanofiber mats with embedded non-sintered TiO2 for dye-sensitized solar cells (DSSCs). In: Fibers Bd. 7 (2019), Nr. 7' ama: Ehrmann A, Mamun A, Trabelsi M, et al. Electrospun nanofiber mats with embedded non-sintered TiO2 for dye-sensitized solar cells (DSSCs). Fibers. 2019;7(7). doi:10.3390/fib7070060 apa: Ehrmann, A., Mamun, A., Trabelsi, M., Klöcker, M., Sabantina, L., Großerhode, C., … Streitenberger, A. (2019). Electrospun nanofiber mats with embedded non-sintered TiO2 for dye-sensitized solar cells (DSSCs). Fibers, 7(7). https://doi.org/10.3390/fib7070060 bibtex: '@article{Ehrmann_Mamun_Trabelsi_Klöcker_Sabantina_Großerhode_Blachowicz_Grötsch_Cornelißen_Streitenberger_2019, title={Electrospun nanofiber mats with embedded non-sintered TiO2 for dye-sensitized solar cells (DSSCs)}, volume={7}, DOI={10.3390/fib7070060}, number={760}, journal={Fibers}, author={Ehrmann, Andrea and Mamun, Al and Trabelsi, Marah and Klöcker, Michaela and Sabantina, Lilia and Großerhode, Christina and Blachowicz, Tomasz and Grötsch, Georg and Cornelißen, Carsten and Streitenberger, Almuth}, year={2019} }' chicago: Ehrmann, Andrea, Al Mamun, Marah Trabelsi, Michaela Klöcker, Lilia Sabantina, Christina Großerhode, Tomasz Blachowicz, Georg Grötsch, Carsten Cornelißen, and Almuth Streitenberger. “Electrospun Nanofiber Mats with Embedded Non-Sintered TiO2 for Dye-Sensitized Solar Cells (DSSCs).” Fibers 7, no. 7 (2019). https://doi.org/10.3390/fib7070060. ieee: A. Ehrmann et al., “Electrospun nanofiber mats with embedded non-sintered TiO2 for dye-sensitized solar cells (DSSCs),” Fibers, vol. 7, no. 7, 2019. mla: Ehrmann, Andrea, et al. “Electrospun Nanofiber Mats with Embedded Non-Sintered TiO2 for Dye-Sensitized Solar Cells (DSSCs).” Fibers, vol. 7, no. 7, 60, 2019, doi:10.3390/fib7070060. short: A. Ehrmann, A. Mamun, M. Trabelsi, M. Klöcker, L. Sabantina, C. Großerhode, T. Blachowicz, G. Grötsch, C. Cornelißen, A. Streitenberger, Fibers 7 (2019). date_created: 2019-07-04T19:09:23Z date_updated: 2021-01-18T15:32:27Z department: - _id: '103' doi: 10.3390/fib7070060 intvolume: ' 7' issue: '7' keyword: - TiO2 - dye-sensitized solar cell (DSSC) - textile-based DSSC - electrospinning - nanofiber mat - polyacrylonitrile (PAN) language: - iso: eng publication: Fibers publication_status: published quality_controlled: '1' status: public title: Electrospun nanofiber mats with embedded non-sintered TiO2 for dye-sensitized solar cells (DSSCs) type: journal_article user_id: '223776' volume: 7 year: '2019' ...