Polyvinylidene Fluoride Copolymers with Grafted Polyethyl Methacrylate Chains: Synthesis and Thermal and Dielectric Properties

Abstract

Polyvinylidene fluoride copolymers with grafted polyethyl methacrylate chains have been synthesized for the first time via photoinduced reversible deactivation radical polymerization. Binary and ternary copolymers of vinylidene fluoride with chlorotrifluoroethylene and trifluoroethylene were used as initial polymer chains for modification. The effect of the content of grafted chains on the thermal and dielectric properties of the copolymers has been studied. It has been shown that an increase in the content of grafted chains leads to a decrease in the degradation temperature, dielectric permittivity, and dielectric losses of the copolymers, but it significantly improves their film-forming properties due to a decrease in the degree of crystallinity.