Urška Gradišar Centa (Author), Mohor Mihelčič (Author), Vid Bobnar (Author), Maja Remškar (Author), Lidija Slemenik Perše (Author)

Abstract

In this research, the influences of the addition of PVP to PVDF-HFP polymers and the preparation of thin films using a solvent casting method were studied. The PVDF-HFP and polymer blend PVDF-HFP/PVP thin films with a nanostructured surface were investigated using scanning electron microscopy, differential scanning calorimetry, nanoindentation, and dielectric spectroscopy. The results showed that the PVP formed a dispersed phase (the poorer conductive islands) in the PVDF-HFP polymer matrix, which reduced its mechanical properties. The crystallinity of PVDF-HFP polymer decreased with the addition of PVP by 7.4%, but the PVP induced the formation of the polar β-phase of PVDF-HFP. Therefore, an improved dielectric response is expected, but it was not significantly improved even though the polar β-phase was detected. The contrasting effect was attributed to less conductive PVP islands on the surface of the PVDF-HFP/PVP polymer blend, which decreased its conductivity.

Keywords

polimerna mešanica;mehanske lastnosti;kristalizacija;polymer blend;mechanical properties;crystallization;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 678:531
COBISS: 119477507 Link will open in a new window
ISSN: 2079-6412
Views: 41
Downloads: 21
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Other data

Secondary language: Slovenian
Secondary keywords: polimerna mešanica;mehanske lastnosti;kristalizacija;
Type (COBISS): Article
Pages: str. 1-10
Volume: ǂVol. ǂ12
Issue: ǂiss. ǂ 9
Chronology: Aug. 2022
DOI: 10.3390/coatings12091241
ID: 16306633