Properties of Compatible Blends of Poly(vinylidene fluoride) and Poly(methyl methacrylate)

Abstract

Evidence of the miscibility of poly(vinylidene fluoride) and poly(methyl methacryate) is confirmed by the extensive studies of the dynamic behavior of their blends that are reported here. The blends, as well as the pure polymers, have multiple transitions. There is a single transition which shifts with blend composition as would be expected in compatible systems; however, for PVF2 this is not the transition generally identified as Tg. The Tg of the blend, the Tm of the PVF2, and the relative amount of crystallinity as a function of blend composition were examined by DTA. Density data indicate a lack of volume additivity caused primarily by the varying crystallinity of PVF2-rich blends.