Microflow-system-controlled anionic polymerization of styrenes
Microflow-system-controlled anionic polymerization of styrenes
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DOI：
10.1021/ma800769n
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发表时间：
2008-08
期刊：
影响因子：
5.5
通讯作者：
A. Nagaki;Yutaka Tomida;J. Yoshida
中科院分区：
文献类型：
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作者：
A. Nagaki;Yutaka Tomida;J. Yoshida
使用仲丁基锂作为引发剂在微流系统中进行苯乙烯的阴离子聚合。在容易获得的条件下实现了高水平的分子量分布控制，例如在 0 °C (Mw/Mn = 1.08) 和 24 °C (Mw/Mn = 1.10) 下。苯环上具有甲硅烷基、甲氧基、甲硅烷氧基、炔基和烷硫基的苯乙烯衍生物的聚合也使用仲丁基锂作为引发剂以高度受控的方式发生。使用氯硅烷和嵌段共聚的末端官能化也在微流系统中实现。用二氯二甲基硅烷进行末端官能化导致在硅上形成具有单聚合物链的氯硅烷。随后与另一个活性聚合物链的反应得到在硅核上具有两个不同聚合物链的嵌段共聚物。
Anionic polymerization of styrene using sec-BuLi as an initiator was conducted in a microflow system. A high level of molecular-weight distribution control was achieved under easily accessible conditions, such as at 0 °C (Mw/Mn = 1.08) and 24 °C (Mw/Mn = 1.10). The polymerization of styrene derivatives having silyl, methoxy, silyloxy, alkynyl, and alkylthio groups on the benzene ring also took place in a highly controlled manner using sec-BuLi as an initiator. The end functionalization using chlorosilanes and block copolymerization were also achieved in microflow systems. The end functionalization with dichlorodimethylsilane led to the formation of a chlorosilane having a single polymer chain on silicon. The subsequent reaction with another active polymer chain gave block copolymers having two different polymer chains on a silicon core.