Exclusion of noncrystalline polymer from the interlamellar region in poly(vinylidene fluoride)/poly(methyl methacrylate) blends

摘要: We investigated the intraspherulitic structure of poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA) blends using polarized microscopy and small-angle X-ray scattering (SAXS). The spherulite is coarser with increasing crystallization temperature. internal crystallinity obtained by SAXS much larger than its overall value derived from DSC for coarse spherulite, indicating that amorphous region between lamellar bundles large in this structure. For structures, electron density difference crystalline phase, an analysis profiles, lower. That is, concentration PMMA interlamellar low spherulite. This suggests partially excluded