The effect of PVP on thermal, mechanical, and dielectric properties in PVDF-HFP/PVP thin film

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

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.

• Jezik: Angleški jezik
• Ključne besede: polymer blend, mechanical properties, crystallization
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Datum objave: 25.08.2022
• Leto izida: 2022
• Št. strani: 10 str.
• Številčenje: Vol. 12, iss. 9, art. 1241
• PID: 20.500.12556/RUL-139058
• UDK: 678:531
• ISSN pri članku: 2079-6412
• DOI: 10.3390/coatings12091241
• COBISS.SI-ID: 119477507
• Datum objave v RUL: 29.08.2022

Gradivo je del revije

• Naslov: Coatings
• Skrajšan naslov: Coatings
• Založnik: MDPI AG
• ISSN: 2079-6412
• COBISS.SI-ID: 523035673

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
• Začetek licenciranja: 25.08.2022

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: polimerna mešanica, mehanske lastnosti, kristalizacija