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Facile synthesis of dual-responsive thioether-bridging graft copolymers by combination of controlled polymerization and thio-bromo click reaction  
Facile synthesis of dual-responsive thioether-bridging graft copolymers by combination of controlled polymerization and thio-bromo click reaction
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关键词: stimuli-responsive  click  reaction  ring-opening  polymerization  
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所属学科: 高分子化学
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简介:
Synthesis of stimuli-responsive exact graft polymers with multisegmented backbone and well-controlled grafting density can provide us with insights into structure-property correlations as well as multipurpose applications in smart materials. Given the great potential of stimuli-labile linkages in materials science, this study describes synthesis of thermo/oxidation-responsive poly(N-isopropylacrylamide)-graft-poly(ε-caprolactone) copolymers via consecutive RAFT process, thio-bromo click reaction and ring-opening polymerization. The cloud point of various graft copolymers was liable to enhance with decreasing chain length of PCL grafts and oxidation of thioether groups. Thermo and oxidation stimuli enabled the formation of distinct morphologies involving micelles and their clusters, necklace-like micelles, vesicles, and their mixtures. A robust method is developed to achieve graft copolymers comprising oxidizable and hydrolyzable backbone, which allows for further researches on special functions and applications of multicleavable smart materials.
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上传时间: 2018-11-05 16:52:22
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