Rayleigh散射研究部分相容聚苯乙烯/顺丁橡胶合金相结构  

Study on Morphology of Partially Miscible Blends of Polystyrene and Poly(cis-butadiene) Using Rayleigh Scattering

作　　者：张爽男[1] 王晓红 蔡志江[1] 盛京[1] 

机构地区：[1]天津大学材料科学与工程学院,天津300072 [2]大庆炼化公司,黑龙江大庆163411

出　　处：《中国塑料》2004年第11期85-92,共8页China Plastics

基　　金：国家自然科学基金重点项目资助 (批准号 :5 973 3 0 70 )

摘　　要：用光散射在线采集与分析方法完成了熔融混炼过程中非相容高分子共混物的形态结构分析。选择了聚苯乙烯 /顺丁橡胶合金体系 ;使用了小角前向光散射和小角背散射 (在线 )技术 ,用Debye Bueche光散射理论的结构参数如相关距离ac、平均弦长 l、旋转半径 Rg 和积分不变量Q表征了共混物中分散相尺度和均匀性 ,讨论了合金体系的相容性。用扫描电子显微镜测定了共混物中分散相尺寸 ,并与光散射的结果进行了比较。ac、 l和 Rg 的变化规律与显微镜的结果是一致的。用积分不变量Q研究了共混物的均匀性。The morphology of partially miscible polymer blends of polystyrene/poly(cis-butadiene) was studied based on on-line data collected du ring melt mixing. Both fore scattering and back small angle laser scattering we re employed, the correlation distance a c, average chord lengths, mean squa re rad ius gyration, and integral invariant of the blends were measured, which were co mpared with those obtained from SEM measurement. The values of a c, a nd g were consistent for the two determinations. The phase homogenei ty of the blends was characterized with the integral invariant.

关 键 词：聚合物在线分析 聚合物的光散射 聚苯乙烯/顺丁橡胶共混物 

分 类 号：TQ330[化学工程—橡胶工业]