Enhanced electroactive β-phase nucleation and dielectric properties of PVdF-HFP thin films influenced by montmorillonite and Ni(OH)2 nanoparticle modified montmorillonite

摘要: The present work lays emphasis on the synthesis of electroactive and high dielectric poly(vinylidenefluoride-co-hexafluoropropylene) (PVdF-HFP) composite films incorporated with montmorillonite (MMT) Ni(OH)2 nanoparticle (NP) modified MMT using a facile low cost solution casting technique. Formation NPs, different polymorphs morphology samples have been investigated UV-visible spectroscopy, X-ray diffraction, Fourier transform infrared differential scanning calorimetry field emission electron microscopy. A remarkable improvement in β-phase nucleation (∼85.22% for 1 mass% doped at 82.10% 7.5 NiMMT polymer composites films) promising values are standpoints work. Strong ion–dipole interaction between negatively charged surfaces –CH2 dipoles chains loaded PVdF-HFP formation hydrogen bonds –OH group NPs F atom NP-MMT/PVdF-HFP system play dynamic role enhancing properties samples. large accumulation charges interfaces dopant matrix via Maxwell–Wagner–Sillars interfacial polarization effect occurred due to disparity conductivity dopants is liable significant enrichment films. Excellent thermal stability has also observed these over wide temperature spectrum. These thin may be potential candidates application piezoelectric nanogenerators, energy storage devices, film transistors capacitive sensors etc.