Blends of Immiscible Linear Polymers Prepared in situ:Glass Transition Tmoperatures and Compositions of Separated Phases

摘要

The blends of two linear immiscible polymers (PU and PMMA) formed simulatneously in the course of polymerization at various ratios of the starting components and the initiator concentrations were studied by DSC and light scattering.The comp0osition and weight rractions of precipitated phases were calculated.It was demonstrated that there is a correlation between the composition of precipitated phase and the initial parameters of phase separation.This gave the authors reasons to infer than the earlier stages of polymerization and phase separatio are responsible for the final structure of the material obtained.