中文摘要：

以偶氮二异丁腈（AIBN）为引发剂、2-{[（十二烷基硫基）硫代甲酰基]硫烷基}琥珀酸（DCTSS）作为链转移剂、甲基丙烯酸N,N-二甲氨基乙酯作为单体,通过可逆加成-断裂链转移聚合法合成含十二烷基的聚甲基丙烯酸N,N-二甲氨基乙酯（PDMAEMA-C12H25）。探讨反应温度以及链转移剂与引发剂摩尔比对聚合的影响,采用核磁共振氢谱和凝胶渗透色谱对产物结构及相对分子质量进行表征,同时测试了聚合物的表面性能。结果表明,反应温度为70℃,链转移剂与引发剂摩尔比为4∶1时,PDMAEMA-C12H25的相对分子质量分布较窄,反应可控,具有较低的临界胶束浓度（0.022 g·L-1）,最低表面张力为33.8 m N·m-1（25℃）,对染料具有良好的分散作用。

英文摘要：

Poly [ 2 - （ N, N - dimethyl amino） ethyl methacrylate ] with dodecyl group （ PDMAEMA - C12 H25 ） was synthesized via the reversible addition -fragmentation chain transfer （RAFT） free radical polymerization with 2 - { [ （ dodecy - sulfenyl） - carbonothionyl ]sulfanyl } succinic acid （DCTSS） as chain transfer agent and AIBN as initiator. The effects of some parameters on the polymerization of DMAEMA were investigated, such as temperature, molar ratio of the chain transfer agent to the initiator. The structures and molecular weight of the products were characterized by I HNMR and GPC. Meanwhile, surface properties of the product were measure. Results showed that at the reaction temperature of 70 ℃ and the molar ratio of the chain transfer agent to the initiator of 4 ： 1, the molecular weight distribution of PDMAEMA - C12 H25 is narrow and the reaction is controllable. The product displays rather lower critical micelle concentration （0. 022 g ·L-1 ） with lowest surface tension of 33.8 mN · m-l（ at 25 ℃ ）, and good dispersing action for dyestuffs.