粘度比对刚性链高分子与柔性链高分子共混物微结构的影响

DEPENDENCE OF MICROSTRUCTURE ON THE VISCOSITY RATIO IN THE RIGID-AND FLEXIBLE-CHAIN POLYMER BLENDS

粘度比对刚性链高分子与柔性链高分子共混物微结构的影响何嘉松，卜文胜，张洪志，许向青（中国科学院化学研究所，北京，１０００８０）（化工部北京化工研究院，北京，１０００１３）关键词高分子共混物，热致液晶聚合物，聚合物加工影响柔性链高分子与柔性链高分子共混...

thermotropic liquid Crystalline polymer(TLCP) was blended with fourthermoplastic reSins, poly (butylene terephthalate) (PBT), polycarbonate (PC),polyethersulfone (PES) and polysulfone (PSU), in ther respective ' processing windows', in a wide temperature range from 270 to 360 ℃ It is shown that themicrostructure formation of their blends depends strongly on the viscosity ratioof the dispersed TLCP phase to the continuous resin phase.Viscosity ratios farbelow unity resulted in TLCP fibrillation in flexible-chain polymers.The diameterof TLCP fibrils can be as small as 0.3 μm and the aspect ration as large as 30.