sPS/iPP共混物晶型研究  

STUDIES ON CRYSTAL FORMS OF sPS/ iPP BLENDS

作　　者：徐德民[1] 张明革[1] 柯毓才[1] 胡友良[1] 

机构地区：[1]中国科学院化学研究所分子科学中心工程塑料国家重点实验室中国石油天然气集团公司催化重点实验室北京催化研究室,北京100080

出　　处：《高分子学报》2001年第6期796-798,共3页Acta Polymerica Sinica

基　　金：国家重点基础研究发展规划项目 (G19990 6 480 0 )

摘　　要：The conformation of polymer chains and the crystal forms of syndiotactic polystyrene ( s PS)/isotactic polypropene ( i PP) blends,prepared by reactor polymerization were investigated.Results indicated that the crystal forms of s PS and i PP in blends were similar to those in neat polymers.Both s PS and i PP in blends existed in α forms,which were not affected by blending.The results obtained from X ray and FTIR measurements show that the crystallinity of s PS and i PP was reduced by blending.With increasing the s PS content,especially over 75%,the crystallinity of s PS and dimension of s PS crystals were evidently reduced.The conformation of polymer chains and the crystal forms of syndiotactic polystyrene (sPS)/isotactic polypropene (iPP) blends, prepared by reactor polymerization were investigated. Results indicated that the crystal forms of sPS and iPP in blends were similar to those in neat polymers. Both sPS and iPP in blends existed in a forms, which were not affected by blending. The results obtained from X-ray and FTIR measurements show that the crystallinity of sPS and iPP was reduced by blending. With increasing the sPS content, especially over 75%, the crystallinity of sPS and dimension of sPS crystals were evidently reduced.

关 键 词：间规聚苯乙烯 共混物 晶型 构象 结晶 热塑性塑料 

分 类 号：O632[理学—高分子化学]