| 过硫酸盐和N,N,N′,N′-四甲基乙二胺体系引发烯类聚合机理的研究 |
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| 引用本文： | 郭新秋,丘坤元,冯新德.过硫酸盐和N,N,N′,N′-四甲基乙二胺体系引发烯类聚合机理的研究[J].高分子学报,1988,0(2):152-156. |
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| 作者姓名： | 郭新秋 丘坤元 冯新德 |
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| 作者单位： | 北京大学化学系 北京
(郭新秋，丘坤元)，北京大学化学系 北京(冯新德) |
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| 摘 要： | <正> 过硫酸盐和N,N,N′,N′-四甲基乙二胺(TMEDA)体系用作烯类聚合的引发剂已有报道。本文报道该引发体系的反应机理。1.实验方法
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| 关 键 词： | 过硫酸盐和二元胺引发体系 氧化还原引发 ESR 引发机理 丙烯酰胺 |
| 收稿时间： | 1987-05-15 |
STUDIES ON THE INITIATION MECHANISM OF PEROXYDISULFATE/N, N,N',N'-TETRAMETHYL- ETHYLENEDIAMINE SYSTEM IN VINYL POLYMERIZATION |
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| GUO Xin-qiu,QIU Kun-yuan,FENG Xin-de.STUDIES ON THE INITIATION MECHANISM OF PEROXYDISULFATE/N, N,N'''',N''''-TETRAMETHYL- ETHYLENEDIAMINE SYSTEM IN VINYL POLYMERIZATION[J].Acta Polymerica Sinica,1988,0(2):152-156. |
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| Authors: | GUO Xin-qiu QIU Kun-yuan FENG Xin-de |
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| Institution: | Department of Chemistry; Peking University; Beijing |
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| Abstract: | The initiation mechanism of the title redox system was studied by spin trapping technique and ESR spectrum. The free radical (CH3). NCNCH2(CH3)NCH2 (I) is one of the initial free radicals responsible for the initiation of vinyl polymerization in addition to sulfate free radical (HO3SO). The result of amino end group analysis confirmed the fact that the free radical I did initiate vinyl polymerization. The effects of the diamine concentrations on the final percentage conversion of acrylamide polymerization and on the molecular weights of PAAM were also studied. The initiation mechanism was proposed finally. |
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| Keywords: | Redox system ESR Initiation mechanism Peroxydisulfate and diamine sys- tem Acrylamide |
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