Synthesis and characterization of double thermo-responsive block copolymer consisting N-isopropylacrylamide by atom transfer radical polymerization
Synthesis and characterization of double thermo-responsive block copolymer consisting N-isopropylacrylamide by atom transfer radical polymerization
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DOI：
10.1002/pola.22925
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发表时间：
2008-09-15
影响因子：
--
通讯作者：
Aoyagi, Takao
中科院分区：
文献类型：
--
作者：
Kotsuchibashi, Youhei;Kuboshima, Yumi;Aoyagi, Takao
本论文主要研究了具有双重响应的温敏材料的简便合成与表征。为了实现这些，AB型二嵌段共聚物包括聚（N-异丙基丙烯酰胺）（NIPAAm）和聚（NIPAAm-co-（N-（羟甲基）丙烯酰胺）（HMAAm））的设计。它是用原子转移自由基聚合（ATRP）技术一锅法合成的。结果表明，所合成的Poly（NIPAAm-co-HMAAm）具有灵敏的温度响应性，且浊点可通过HMAAm的组成完全调节。正如预期的那样，嵌段共聚物在水溶液中表现出双温响应曲线。通过核磁共振氢谱和浊度的测定，探讨了其响应行为.从这些结果中，我们可以确认几乎独立的脱水的每个部分。(C)2008 Wiley Periodicals，Inc.
In this thesis, we studied the convenient synthesis and characterizations of thermo-responsive materials with double response. To achieve these, AB-type diblock copolymers comprising of poly(N-isopropylacrylamide) (NIPAAm) segment and poly(NIPAAm-co-(N-(hydroxymethyl)acrylamide) (HMAAm)) one were designed. That was synthesized in one-pot using an atom transfer radical polymerization (ATRP) technique. Poly(NIPAAm-co-HMAAm)s synthesized separately showed sensitive thermo-response and the cloud point was completely tunable by the composition of HMAAm. As expected, the block copolymers exhibited double thermo-responsive profiles in aqueous solution. The responsive behavior was discussed by precise trace by H-1 NMR and turbidity measurements. From these results, we could confirm almost independent dehydration of each segment. (C) 2008 Wiley Periodicals, Inc.