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首页> 外文期刊>Macromolecular symposia >Preparation of Poly(N-Vinylcaprolactam) (NVCL) and Statistical Copolymers of NVCL with Variable Cloud Point Temperature by Using A Trithiocarbonate RAFT Agent
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Preparation of Poly(N-Vinylcaprolactam) (NVCL) and Statistical Copolymers of NVCL with Variable Cloud Point Temperature by Using A Trithiocarbonate RAFT Agent

机译：用三硫代碳酸酯RAFT剂制备聚（N-乙烯基己内酰胺）（NVCL）和浊点温度可变的NVCL统计共聚物

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摘要

Preparation of PNVCL controlling its molecular weight and maintaining low dispersities by using a trithiocarbonate RAFT agent was achieved. Typical RAFT kinetics were not observed, nevertheless the prepared polymers were reactivated to grow a second hydrophobic poly(hexyl acrylate) block. A series of statistical copolymers of NVCL with N-vinyl pyrrolidone, n-hexyl acrylate, methacrylic acid, 2- (diethylamino)ethyl methacrylate and 2-(methacryloyloxy)benzoic acid with controlled dispersity were also prepared. By this copolymerization method the cloud point temperature of PNVCL was varied from 27 ℃ to 42 ℃ depending on comonomer type, content and pH of the aqueous solution.
机译：通过使用三硫代碳酸酯RAFT剂，制备了可控制其分子量并保持低分散性的PNVCL。没有观察到典型的RAFT动力学，但是将制备的聚合物重新活化以生长第二个疏水性聚丙烯酸己酯嵌段。还制备了一系列NVCL与N-乙烯基吡咯烷酮，丙烯酸正己酯，甲基丙烯酸，甲基丙烯酸2-（二乙氨基）乙酯和2-（甲基丙烯酰氧基）苯甲酸的统计共聚物，其分散度受控。通过这种共聚方法，PNVCL的浊点温度根据共聚单体的类型，水溶液的含量和pH值在27℃至42℃之间变化。

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