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首页> 外文期刊>Journal of Polymer Science, Part A. Polymer Chemistry >Synthesis of hydrophilic/CO2-philic poly(ethylene oxide)-b-poly (1,1,2,2-tetrahydroperfluorodecyl acrylate) block copolymers via controlled/living radical polymerizations and their properties in liquid and supercritical CO2
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Synthesis of hydrophilic/CO2-philic poly(ethylene oxide)-b-poly (1,1,2,2-tetrahydroperfluorodecyl acrylate) block copolymers via controlled/living radical polymerizations and their properties in liquid and supercritical CO2

机译：受控/活性自由基聚合合成亲水/亲CO2聚环氧乙烷-b-聚（1,1,2,2-四氢全氟癸基丙烯酸酯）嵌段共聚物及其在液体和超临界CO2中的性能

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摘要

Hydrophilic/CO2-philic poly(ethylene oxide)-b-poly(1,1,2,2-tetrahydroperfluorodecyl acrylate) block copolymers were synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization, iodine transfer polymerization (ITP), and atom transfer radical polymerization (ATRP) in the presence of either degenerative transfer agents or a macroinitiator based on poly(ethylene oxide). In this work, both RAFT and ATRP showed higher efficiency than ITP for the preparation of the expected copolymers. More detailed research was carried out on RAFT, and the living character of the polymerization was confirmed by an ultraviolet (UV) analysis of the -SC(S)Ph or -SC(S)S-C12H25 end groups in the polymer chains. The quantitative (UV) analysis of the copolymers indicated a number-average molecular weight in good agreement with the value determined by H-1 NMR analysis. The properties of the macromolecular surfactants were investigated through the determination of the cloud points in neat liquid and supercritical CO2 and through the formation of water-in-CO2 emulsions. (C) 2004 Wiley Periodicals, Inc.
机译：通过可逆的加成-断裂链转移（RAFT）聚合，碘转移聚合（ITP）和氢键合成亲水/ CO2-的聚环氧乙烷-b-聚（1,1,2,2-四氢全氟癸基丙烯酸酯）嵌段共聚物变性转移剂或基于聚环氧乙烷的大分子引发剂存在下进行原子转移自由基聚合（ATRP）。在这项工作中，RAFT和ATRP均比ITP表现出更高的制备预期共聚物的效率。对RAFT进行了更详细的研究，并且通过对聚合物链中的-SC（S）Ph或-SC（S）S-C12H25端基进行紫外线（UV）分析，证实了聚合的活性。共聚物的定量（UV）分析表明数均分子量与通过H-1 NMR分析确定的值高度吻合。通过确定纯净液体和超临界CO2中的浊点并通过形成CO2包水乳液来研究大分子表面活性剂的性能。 （C）2004年Wiley Periodicals，Inc.

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