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Mihelčič, Mohor
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Publications (6/6 displayed)
- 2024The Addition of MoO3 or SiO2 Nano-/Microfillers Thermally Stabilized and Mechanically Reinforce the PVDF-HFP/PVP Polymer Composite Thin Films
- 2023Carbon nanotube network formation and configuration/morphology on reinforcing and conductive performance of polymer-based nanocompositescitations
- 2022Influence of stabilization additive on rheological, thermal and mechanical properties of recycled polypropylenecitations
- 2022The effect of PVP on thermal, mechanical, and dielectric properties in PVDF-HFP/PVP thin filmcitations
- 2022The Effect of PVP on Thermal, Mechanical, and Dielectric Properties in PVDF-HFP/PVP Thin Filmcitations
- 2014Electrochromic performances of nonstoichiometric NiO thin filmscitations
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article
The Effect of PVP on Thermal, Mechanical, and Dielectric Properties in PVDF-HFP/PVP Thin Film
Abstract
<jats:p>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.</jats:p>