Synthesis and Characterization of Core–Double-Shell-Structured PVDF-grafted-BaTiO3/P(VDF-co-HFP) Nanocomposite Films

• DOI: 10.3390/polym15143126
• Publication Date: 2023-07-24T05:12:28Z
• Authors: Fatima Ezzahra Bo...; Salima Atlas; Simone Capaccioli; Massimiliano Labardi; Abdelghani Hajlane; Bruno Ameduri; Mustapha Raihane
• Keywords: Thermogravimetric analysis; Polyvinylidene fluoride; Thermal Stability; Barium titanate

Core–double-shell-structured nanocomposite films consisting of polyvinylidene fluoride-grafted-barium titanate (PVDF-g-BT) incorporated into a P(VDF-co-hexafluoropropylene (HFP)) copolymer matrix were produced via solution mixing method for energy storage applications. The resulting thoroughly investigated spectroscopic, thermal, and morphological analyses. Thermogravimetric data provided an enhancement the thermal stability, while differential scanning calorimetry indicated increase in crystallinity after addition PVDF-g-BT. Moreover, broadband dielectric spectroscopy revealed three processes, namely, glass–rubber relaxation (αa), associated with polymer crystalline phase (αc), slower nanocomposites from accumulation charge on interface between PVDF-g-BT filler P(VDF-co-HFP) matrix. dependence constant composition was analyzed, we found that highest permittivity obtained by concentration added to largest P(VDF-co-HFP). Mechanical analysis improvement Young’s modulus all versus pristine P(VDF-co-HFP), confirming uniformity distribution strong interaction matrix, as also evidenced electron microscopy. suggested system is promising use high-energy-density devices supercapacitors.