摘要
分别以 γ射线和过氧化苯甲酰 ( BPO)引发苯乙烯 ( St) /丙烯酸甲酯 ( MA) ,St/丙烯酸丁酯 ( BA)在微乳液中共聚合 ,微乳液共聚合与本体共聚合相比 ,两者之间存在明显的差异 ,两种引发剂之间也不相同 ,在微乳液共聚合的聚合初期 ,BPO引发时 ,共聚合场所为大聚合物粒子的内核 ;而 γ射线引发时 ,为单体溶胀胶束的乳化剂层。
Microemulsion copolymerization of styrene and acrylate was studied with BPO and γ ray as initiators. It is found that there is obvious difference between the microemulsion and bulk copolymerization. There is also great difference between the two initiators. The difference is attributed to different reaction loci during the early stage of polymerization. When initiator is BPO, the reaction loci are the core of large polymer particles. While the initiator is γ ray, the reaction loci are the emulsifier layer of small micelles swollen with monomer.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2000年第3期70-73,共4页
Polymer Materials Science & Engineering
