Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel
This study is focused on the characterization and investigation of polyvinylidene fluoride (PVDF) nanofibers from the point of view of macro- and nanometer level. The fibers were produced using electrostatic spinning process in air. Two types of fibers were produced since the collector speed (300 rp...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/3/593 |
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| author | Tatiana Pisarenko Nikola Papež Dinara Sobola Ştefan Ţălu Klára Částková Pavel Škarvada Robert Macků Erik Ščasnovič Jaroslav Kaštyl |
| author_facet | Tatiana Pisarenko Nikola Papež Dinara Sobola Ştefan Ţălu Klára Částková Pavel Škarvada Robert Macků Erik Ščasnovič Jaroslav Kaštyl |
| author_sort | Tatiana Pisarenko |
| collection | DOAJ |
| description | This study is focused on the characterization and investigation of polyvinylidene fluoride (PVDF) nanofibers from the point of view of macro- and nanometer level. The fibers were produced using electrostatic spinning process in air. Two types of fibers were produced since the collector speed (300 rpm and 2000 rpm) differed as the only one processing parameter. Differences in fiber’s properties were studied by scanning electron microscopy (SEM) with cross-sections observation utilizing focused ion beam (FIB). The phase composition was determined by Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy. The crystallinity was determined by differential scanning calorimetry (DSC), and chemical analysis of fiber’s surfaces and bonding states were studied using X-ray photoelectron spectroscopy (XPS). Other methods, such as atomic force microscopy (AFM) and piezoelectric force microscopy (PFM), were employed to describe morphology and piezoelectric response of single fiber, respectively. Moreover, the wetting behavior (hydrophobicity or hydrophilicity) was also studied. It was found that collector speed significantly affects fibers alignment and wettability (directionally ordered fibers produced at 2000 rpm almost super-hydrophobic in comparison with disordered fibers spun at 300 rpm with hydrophilic behavior) as properties at macrolevel. However, it was confirmed that these differences at the macrolevel are closely connected and originate from nanolevel attributes. The study of single individual fibers revealed some protrusions on the fiber’s surface, and fibers spun at 300 rpm had a core-shell design, while fibers spun at 2000 rpm were hollow. |
| first_indexed | 2024-03-09T23:15:43Z |
| format | Article |
| id | doaj.art-8f7c94f113e74a449d390266edec24dd |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T23:15:43Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-8f7c94f113e74a449d390266edec24dd2023-11-23T17:36:27ZengMDPI AGPolymers2073-43602022-02-0114359310.3390/polym14030593Comprehensive Characterization of PVDF Nanofibers at Macro- and NanolevelTatiana Pisarenko0Nikola Papež1Dinara Sobola2Ştefan Ţălu3Klára Částková4Pavel Škarvada5Robert Macků6Erik Ščasnovič7Jaroslav Kaštyl8Department of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 2848/8, 61600 Brno, the Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 2848/8, 61600 Brno, the Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 2848/8, 61600 Brno, the Czech RepublicDirectorate of Research, Development and Innovation Management (DMCDI), Technical University of Cluj-Napoca, Constantin Daicoviciu Street, No. 15, 400020 Cluj-Napoca, RomaniaCentral European Institute of Technology, Purkyňova 656/123, 61200 Brno, the Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 2848/8, 61600 Brno, the Czech RepublicDepartment of Physics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 2848/8, 61600 Brno, the Czech RepublicCentral European Institute of Technology, Purkyňova 656/123, 61200 Brno, the Czech RepublicCentral European Institute of Technology, Purkyňova 656/123, 61200 Brno, the Czech RepublicThis study is focused on the characterization and investigation of polyvinylidene fluoride (PVDF) nanofibers from the point of view of macro- and nanometer level. The fibers were produced using electrostatic spinning process in air. Two types of fibers were produced since the collector speed (300 rpm and 2000 rpm) differed as the only one processing parameter. Differences in fiber’s properties were studied by scanning electron microscopy (SEM) with cross-sections observation utilizing focused ion beam (FIB). The phase composition was determined by Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy. The crystallinity was determined by differential scanning calorimetry (DSC), and chemical analysis of fiber’s surfaces and bonding states were studied using X-ray photoelectron spectroscopy (XPS). Other methods, such as atomic force microscopy (AFM) and piezoelectric force microscopy (PFM), were employed to describe morphology and piezoelectric response of single fiber, respectively. Moreover, the wetting behavior (hydrophobicity or hydrophilicity) was also studied. It was found that collector speed significantly affects fibers alignment and wettability (directionally ordered fibers produced at 2000 rpm almost super-hydrophobic in comparison with disordered fibers spun at 300 rpm with hydrophilic behavior) as properties at macrolevel. However, it was confirmed that these differences at the macrolevel are closely connected and originate from nanolevel attributes. The study of single individual fibers revealed some protrusions on the fiber’s surface, and fibers spun at 300 rpm had a core-shell design, while fibers spun at 2000 rpm were hollow.https://www.mdpi.com/2073-4360/14/3/593AFMcore-shellDSCelectrostatic spinningFIBFTIR |
| spellingShingle | Tatiana Pisarenko Nikola Papež Dinara Sobola Ştefan Ţălu Klára Částková Pavel Škarvada Robert Macků Erik Ščasnovič Jaroslav Kaštyl Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel Polymers AFM core-shell DSC electrostatic spinning FIB FTIR |
| title | Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel |
| title_full | Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel |
| title_fullStr | Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel |
| title_full_unstemmed | Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel |
| title_short | Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel |
| title_sort | comprehensive characterization of pvdf nanofibers at macro and nanolevel |
| topic | AFM core-shell DSC electrostatic spinning FIB FTIR |
| url | https://www.mdpi.com/2073-4360/14/3/593 |
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