In situ generation of nitroxide from alkoxyamines for controlled acrylate polymerization
In situ generation of nitroxide from alkoxyamines for controlled acrylate polymerization
复制标题
由烷氧基胺原位生成硝基氧用于受控丙烯酸酯聚合
DOI：
10.1002/pola.21605
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
R. B. Grubbs
中科院分区：
文献类型：
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作者：
Qing Xia;R. B. Grubbs
概述了在不添加过量游离氮氧自由基的情况下，由烷氧基胺控制氮氧自由基介导的丙烯酸酯聚合的一般策略。将通过1-苯乙基与2-甲基-2-亚硝基丙烷加成而在一锅中制备的2，2-二甲基-3-（1-苯乙氧基）-4-苯基-3-氮杂戊烷（1）在加入单体之前加热，得到烷氧基胺1、游离氮氧自由基和2，3-二苯基丁烷的混合物。在高达125 °C的温度下预热30分钟，丙烯酸正丁酯在125 °C下的后续聚合动力学似乎基本上不受影响，尽管聚合物的最终分子量取决于预热温度。由该方法得到的聚（丙烯酸正丁酯）样品具有比不存在预热方法得到的那些样品窄得多的分子量分布。
A general strategy for the controlled nitroxide-mediated polymerization of acrylates from alkoxyamines without addition of excess free nitroxide is outlined. 2,2-Dimethyl-3-(1-phenylethoxy)-4-phenyl-3-azapentane (1), prepared in one pot by the addition of 1-phenylethyl radicals to 2-methyl-2-nitrosopropane, is heated prior to the addition of monomer to afford a mixture of alkoxyamine 1, free nitroxide, and 2,3-diphenylbutane. With a 30 min preheating period at temperatures up to 125 °C, the kinetics of the subsequent polymerization of n-butyl acrylate at 125 °C appear largely unaffected, though the ultimate molecular weight of the polymers is dependent upon the preheating temperature. The poly(n-butyl acrylate) samples, that result from this process, have much narrower molecular weight distributions than those which result in the absence of the preheating process.
影响因子：
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作者：
Miura, Y;Narumi, A;Kakuchi, T
通讯作者：
Kakuchi, T
影响因子：
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作者：
Inoue, Y;Watanabe, J;Ishihara, K
通讯作者：
Ishihara, K