摘要
通过观测苯乙烯微乳液种子聚合前后体系内聚合物粒子大小及其分布的变化发现，无论是γ射线还是ＫＰＳ引发，聚合过程中都没有新的聚合物粒子生成．尽管聚合前体系中存在单体溶胀的胶束，但在聚合过程中这些胶束主要充当单体仓库，自己成核聚合的几率很低．由于微乳液种子聚合体系内，单体量相对较低，聚合物粒子数目很大，其聚合动力学明显不同于常规乳液种子聚合．
Microemulsion seeded polymerizations of styrene were studied with γ ray or potassium persulfate. After examining the size of polymer particles and its distribution before and after polymerization, it was found that there were no new particles formed during polymerization, despite that there were micelles in aqueous phase. These micelles acted as monomer reservoir during polymerization, instead of nucleating loci. Due to the lower monomer content and the much more polymer particles in microemulsion seeded polymerization, its polymerization behavior was much different from the emulsion seeded polymerization.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第7期1166-1170,共5页
Chemical Journal of Chinese Universities
关键词
微乳液聚合
种子聚合
苯乙烯
聚苯乙烯
Microemulsion polymerization, Seeded polymerization, Styrene
