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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and characterization of methyl methacrylate/styrene hyperbranched copolymers via living radical mechanism
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Synthesis and characterization of methyl methacrylate/styrene hyperbranched copolymers via living radical mechanism

机译：甲基丙烯酸甲酯/苯乙烯超支化共聚物的活性自由基合成与表征

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Free-radical copolymerizations; of N,N-diethylaminodithiocarbamoylmethylstyrene (inimer: DTCS) with a methyl methacrylate (MMA)/zinc chloride (ZnCl2) complex were carried out under UV light irradiation. DTCS monomers play an important role in this copolymerization system as an inimer that is capable of initiating living radical polymerization of the vinyl group. The reactivity ratios (r(1) = 0.56 and r(2) = 0.52: DTCS [M-1]; MMA [M-2]) obtained for this copolymerization system were different from a corresponding model system (alternating copolymer) of a styrene and MMA/ZnCl2 complex (r(1) = 0.25 and r(2) = 0.056). It was found that the hyperbranched copolymers produced exhibited a random branching structure. It was found that the Lewis acid ZnCl2 formed the complex not only with MMA but also with the carbamate group of inimer. (C) 2003 Wiley Periodicals, Inc. [References: 27]
机译：自由基共聚; N，N-二乙基氨基二硫代氨基甲酰基甲基苯乙烯（异构体：DTCS）与甲基丙烯酸甲酯（MMA）/氯化锌（ZnCl 2）配合物的制备在紫外光下进行。 DTCS单体在该共聚体系中起着重要的作用，它可以引发乙烯基的活性自由基聚合。针对该共聚体系获得的反应性比率（r（1）= 0.56和r（2）= 0.52：DTCS [M-1]; MMA [M-2]）与相应的a的模型系统（交替共聚物）不同苯乙烯和MMA / ZnCl2复合物（r（1）= 0.25和r（2）= 0.056）。发现所产生的超支化共聚物表现出无规支化结构。发现路易斯酸ZnCl 2不仅与MMA形成复合物，而且还与imimer的氨基甲酸酯基形成复合物。 （C）2003 Wiley Periodicals，Inc. [参考：27]

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