摘要
苯乙烯与 1- (2 -叔丁基过氧异丙基 ) - 3-异丙烯基苯 (D12 0 )能进行自由基共聚合反应 ,聚合后过氧基团以侧基的形式被保留在共聚物大分子链上。凝胶色谱分析发现 ,随原料单体中 D12 0比例增加 ,共聚物的分子量减小 ,分子量分布变窄 ;DSC分析发现共聚物中过氧基团的分解温度随 D12 0结构单元含量的增加而下降 ,但仍高于 D12 0单体过氧基团的分解温度。苯乙烯与 D12 0的竞聚率为 :r D12 0 =0 .70 0 ,r St=0 .714。
The copolymerization of tert-butyl-3-isopropenylcumylperoxide (D120) and styrene was discussed. The copolymers with pendent peroxide groups were prepared by free radical polymerizations. The molecular weights of the copolymer were about 12 000~24 000 and decreased with the increase of D120 content in the monomer mixture. The decomposition temperature of the peroxide groups in the copolymer also decreased with the increase of content of D120 in the copolymer. The reactivity ratio calculated from Kelen-Tudos method is: r D120= 0.700, r St= 0.714.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2003年第1期45-48,共4页
Polymer Materials Science & Engineering
基金
1999~ 2 0 0 0年度江苏省自然科学基金资助项目 ( BK99115 )
