Controlled/living polymerization of 2‐(diethylamino)ethyl methacrylate and its block copolymer with tert‐butyl methacrylate by atom transfer radical polymerization
Controlled/living polymerization of 2‐(diethylamino)ethyl methacrylate and its block copolymer with tert‐butyl methacrylate by atom transfer radical polymerization
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DOI：
10.1002/pola.10816
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发表时间：
2003-09
期刊：
影响因子：
--
通讯作者：
L. Gan;P. Ravi;B. Mao;K. Tam
中科院分区：
文献类型：
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作者：
L. Gan;P. Ravi;B. Mao;K. Tam
描述了在各种反应条件下通过均相原子转移自由基聚合进行甲基丙烯酸 2-(二乙氨基)乙酯 (DEAEMA) 的聚合。检查了引发剂和溶剂的影响。以1,1,4,7,10,10-六甲基三乙烯四胺/氯化铜/对甲苯磺酰氯为配体/催化剂/引发剂体系，在甲醇中合成了多分散指数低至1.07的聚(DEAEMA)。动力学研究表明聚合反应得到很好的控制，并表现出该过程的活性特征。成功合成了 DEAEMA 和甲基丙烯酸叔丁酯 (tBMA) 的明确嵌段共聚物。以 p(DEAEMA) 或 p(tBMA) 作为大分子引发剂开始合成共聚物，可以获得同样好的结果。然而，只能使用以氯封端的大分子引发剂。相应的以溴作为可转移基团的大分子引发剂不能产生明确的共聚物。
Polymerization of 2-(diethylamino)ethyl methacrylate (DEAEMA) via homogeneous atom transfer radical polymerization under various reaction conditions is described. The effects of the initiators and solvents were examined. With 1,1,4,7,10,10-hexamethyl triethylenetetramine/copper(I) chloride/p-toluenesulfonyl chloride as the ligand/catalyst/initiator system in methanol, poly(DEAEMA) with a polydispersity index as low as 1.07 was synthesized. Kinetic studies demonstrated the polymerization was very well controlled and exhibited the living characteristic of the process. Well-defined block copolymers of DEAEMA and tert-butyl methacrylate (tBMA) were successfully synthesized. The copolymers could be synthesized with equally good results by starting with either p(DEAEMA) or p(tBMA) as the macroinitiators. However, only the macroinitiators terminated with chlorine should be used. The corresponding macroinitiators with bromine as a transferable group did not yield well-defined copolymers.