The effect of PVP on thermal, mechanical, and dielectric properties in PVDF-HFP/PVP thin filmGradišar Centa, Urška (Avtor) Mihelčič, Mohor (Avtor) Bobnar, Vid (Avtor) Remškar, Maja (Avtor) Slemenik Perše, Lidija (Avtor) polymer blendmechanical propertiescrystallizationIn 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.20222022-08-29 14:33:40Članek v reviji139058UDK: 678:531ISSN pri članku: 2079-6412DOI: 10.3390/coatings12091241COBISS_ID: 119477507sl