摘要
在 4 -羟基 - 2 ,2 ,6 ,6 -四甲基氧化哌啶醇 (HTEMPO)存在下实现了苯乙烯和丙烯腈的可控自由基聚合 ,制得了具有不同丙烯腈含量的窄分布的苯乙烯 /丙烯腈共聚物。由于 HTEMPO和末端丙烯腈增长自由基间发生氢转移反应 ,导致复杂的共聚合反应 。
Nitroxide mediated radical copolymerization of styrene(St) and acrylonitrile(An) was carried out in presence of 4 hydroxyl 2,2,6,6 tetramethyl piperidine N oxyl(HTEMPO). Copolymerizations for St/An systems with different compositions in reactive were in control of stable free radical polymerization(SFRP) and a series of narrow polydispersity poly(St co Ans) were obtained. However, researches in copolymerization kinetic are difficult to expect according to conservation stationary theory, due to the complicated copolymerization process and hydrogen transfer reaction between HTEMPO and the acrylonitrile penultimate unit radical.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2002年第2期55-58,共4页
Polymer Materials Science & Engineering
基金
聚合物分子工程教育部重点实验室资助项目
