Cation pool-initiated controlled/living polymerization using microsystems
Cation pool-initiated controlled/living polymerization using microsystems
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DOI：
10.1021/ja044879k
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发表时间：
2004-11-17
影响因子：
15
通讯作者：
Yoshida, J
中科院分区：
文献类型：
--
作者：
Nagaki, A;Kawamura, K;Yoshida, J
人们发现，在由两个微混合器和一个微管反应器组成的微系统中，N-酰基亚胺离子的“阳离子池”可以作为乙烯基醚阳离子聚合的有效引发剂。聚合导致非常窄的分子量分布（Mw/Mn= 1.14）。分子量(Mn)随着单体量的增加而线性增加。碳阳离子聚合物末端被烯丙基三甲基硅烷有效捕获。目前的观察结果说明了微系统与阳离子池结合以高度受控的方式实现聚合的潜力，而没有活性物质和休眠物质之间动态平衡所固有的减速。
The “cation pool” of anN-acyliminium ion was found to serve as an effective initiator of cationic polymerization of vinyl ethers in a microsystem consisting of two micromixers and a microtube reactor. The polymerization led to very narrow molecular weight distribution (Mw/Mn= 1.14). The molecular weight (Mn) increased linearly with an increase in the amount of the monomer. The carbocationic polymer end was effectively trapped by allyltrimethylsilane. The present observations illustrate the potential of microsystems, in conjunction with the cation pool, to effect polymerization in a highly controlled manner without the deceleration inherent in the dynamic equilibrium between active and dormant species.