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首页> 外文OA文献 >Synthesis of poly(vinyl chloride)-b-poly(n-butyl acrylate)-b-poly(vinyl chloride) by the competitive single-electron-transfer/degenerative-chain-transfer-mediated living radical polymerization in water
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Synthesis of poly(vinyl chloride)-b-poly(n-butyl acrylate)-b-poly(vinyl chloride) by the competitive single-electron-transfer/degenerative-chain-transfer-mediated living radical polymerization in water

机译：竞争性单电子转移/变性链转移介导的活性自由基聚合在水中合成聚氯乙烯-b-聚丙烯酸正丁酯-b-聚氯乙烯

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The synthesis of a block copolymer poly(vinyl chloride)-b-poly(n-butyl acrylate)-b-poly(vinyl chloride) is reported. This new material was synthesized by single-electron-transfer/degenerative-chain-transfer-mediated living radical polymerization (SET-DTLRP) in two steps. First, a bifunctional macroinitiator of alpha,omega-di(iodo)poly (butyl acrylate) [alpha,omega-di(iodo)PBA] was synthesized by SET-DTLRP in water at 25 °C. The macroinitiator was further reinitiated by SET-DTLRP, leading to the formation of the desired product. This ABA block copolymer was synthesized with high initiator efficiency. The kinetics of the copolymerization reaction was studied for two PBA macroinitiators with number-average molecular weight of 10 k and 20 k. The relationship between the conversion and the number-average molecular weight was found to be linear. The dynamic mechanical thermal analysis suggests just one phase, indicating that copolymer behaves as a single material with no phase separation. This methodology provides the access to several block copolymers and other complex architectures that result from combinations of thermoplastics (PVC) and elastomers (PBA). From industrial standpoint, this process is attractive, because of easy experimental setup and the environmental friendly reaction medium. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 3001-3008, 2006
机译：报道了嵌段共聚物聚（氯乙烯）-b-聚（丙烯酸正丁酯）-b-聚氯乙烯的合成。该新材料通过单电子转移/变性链转移介导的活性自由基聚合（SET-DTLRP）分两步合成。首先，通过SET-DTLRP在25°C的水中合成了α，ω-二（碘）聚（丙烯酸丁酯）[α，ω-二（碘）PBA]的双功能大分子引发剂。通过SET-DTLRP将大分子引发剂进一步引发，从而形成所需的产物。该ABA嵌段共聚物以高引发剂效率合成。研究了数均分子量为10 k和20 k的两种PBA大分子引发剂的共聚反应动力学。发现转化率和数均分子量之间的关系是线性的。动态机械热分析表明只有一个相，表明共聚物表现为单一材料，没有相分离。这种方法提供了几种嵌段共聚物和其他复杂结构的途径，这些结构是由热塑性塑料（PVC）和弹性体（PBA）组合而成的。从工业的角度来看，由于易于进行实验设置和环境友好的反应介质，该方法具有吸引力。 ©2006 Wiley Periodicals，Inc. J Polym Sci A部分：Polym Chem 44：3001-3008，2006

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