TEM研究交联聚苯乙烯乳胶粒实时粒径大小及分布  

TEM Study of Particle Size and Its Distribution for Cross -Linked Polystyrene in Micelle

作　　者：杨静漪[1] 吕刚[1] 高卫平[2] 吴其晔[2] 

机构地区：[1]青岛化工学院应用化学系 [2]青岛化工学院高分子材料与工程学院,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2001年第3期253-256,共4页Journal of Qingdao University of Science and Technology:Natural Science Edition

摘　　要：通过透射电子显微镜（ＴＥＭ）观察了苯乙烯／双烯Ａ乳液聚　合过程中实时乳胶粒的生长　过程，结果表明，控制乳胶粒尺寸的最佳时间是在反应的最初阶段。同时还比较了引发剂和　乳化剂加入量不同对乳胶粒粒径大小的影响，结果发现，乳胶粒的粒径随引发剂浓度的增大　而减小，对于分两次加入乳化剂的情况，起决定作用的是第一次的加入量。The growth process of the cross- linked polystyrene particle in micelle was examined by TEM in the real time mode for styrene/BVA emulsion polymerizati on system. The influences of different amount of emulsifier and initiator added to polymerization system and the adding time on the size of the micelle were stu died. The results show that the particle size of the cross-l inked polystyrene in micelle decreases with the increase of the amount of initiator added and that t he key for controlling the particle size of the micelle polymeric particle is th e amount of the emulsifier added in the former adding step.

关 键 词：交联聚苯乙烯(PS) 乳胶粒 电子显微镜(TEM) 粒径 

分 类 号：TQ316[化学工程—高聚物工业]