Publication detail

Comprehensive characterization of PVDF nanofibers at macro- and nanolevel

PISARENKO, T. PAPEŽ, N. SOBOLA, D. ŢĂLU, Ş. ČÁSTKOVÁ, K. ŠKARVADA, P. MACKŮ, R. ŠČASNOVIČ, E. KAŠTYL, J.

Original Title

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

AFM; core-shell; DSC; electrostatic spinning; FIB; FTIR; hollow; hydrophobic; hydrophilic; nanofibers; PFM; PVDF; SEM; STEM; Raman spectroscopy; XPS

Authors

PISARENKO, T.; PAPEŽ, N.; SOBOLA, D.; ŢĂLU, Ş.; ČÁSTKOVÁ, K.; ŠKARVADA, P.; MACKŮ, R.; ŠČASNOVIČ, E.; KAŠTYL, J.

Released

1. 2. 2022

Publisher

MDPI

Location

BASEL

ISBN

2073-4360

Periodical

Polymers

Year of study

Number

State

Swiss Confederation

Pages from

593

Pages to

610

Pages count

URL

https://www.mdpi.com/2073-4360/14/3/593

Full text in the Digital Library

http://hdl.handle.net/11012/203910

BibTex

@article{BUT176392,
  author="Tatiana {Pisarenko} and Nikola {Papež} and Dinara {Sobola} and Ştefan {Ţălu} and Klára {Částková} and Pavel {Škarvada} and Robert {Macků} and Erik {Ščasnovič} and Jaroslav {Kaštyl}",
  title="Comprehensive characterization of PVDF nanofibers at macro- and nanolevel",
  journal="Polymers",
  year="2022",
  volume="14",
  number="3",
  pages="593--610",
  doi="10.3390/polym14030593",
  issn="2073-4360",
  url="https://www.mdpi.com/2073-4360/14/3/593"
}