Brillouin scattering of oriented films of poly(vinylidene fluoride) and poly(vinylidene fluoride) ‐poly( methyl methacrylate) blends

Abstract

Abstract Temperature dependent Brillouin scattering studies of PVF 2 films stretched to various stretch ratios have been carried out. Elastic constants for unstretched and stretched films have been obtained as functions of temperature. The elastic constant C 33 of the stretched films has a greater temperature dependence than that of unstretched films. To elucidate the effect of the surrounding amorphous matrix on the Brillouin spectrum of semicrystalline PVF 2 film, we carried out Brillouin scattering studies of films made from blends of PVF 2 and PMMA.