Miscibility, Phase Separation, and Interdiffusion in the Poly (methyl methacrylate)-Poly (vinylidene fluoride) System Solid-State NMR Study

摘要

The miscibility of PMMA and PVF2 is investigated using Solid State Nuclear Magnetic Resonance. Miscibility at the molecu-lar level is detected using fluorine to carbon cross polarization experiments and fluorine to proton to carbon double cross po-larization experiments. The proton to fluorine cross depolariza-tion technique is used to determine the amounts of PMMA and PVF2 that are intimately mixed. These NMR techniques probe miscibility in a range from 3 to 50 A. The proton to fluorine cross depolarization technique is applied to the studies of phase separation and interdiffusion in the PMMA/PVF2 system.