| 锰(Ⅲ)离子与羧酸或α-羟基羧酸体系引发丙烯酰胺聚合 |
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| 引用本文： | 丘坤元,杨英飞,冯新德.锰(Ⅲ)离子与羧酸或α-羟基羧酸体系引发丙烯酰胺聚合[J].高分子学报,1989(5). |
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| 作者姓名： | 丘坤元 杨英飞 冯新德 |
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| 作者单位： | 北京大学化学系 北京
(丘坤元，杨英飞)，北京大学化学系 北京(冯新德) |
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| 基金项目： | 国家自然科学基金资助课题 |
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| 摘 要： | 锰(Ⅲ)离子可以引发烯类单体自由基聚合。羧酸,α-羟基羧酸对丙烯酰胺聚合有促进作用,其活性顺序为羟基多元羧酸(柠檬酸)>羟基羧酸(乳酸)>羧酸(正丁酸)。测定了在较高酸性(H~+]=3.0M)的硫酸水溶液中,单独Mn~(3+),Nn~(3+)-乙醇酸,Mn~(3+)-乳酸引发丙烯酰胺聚合的活化能与动力学方程。
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| 关 键 词： | 自由基聚合 丙烯酰胺 锰(Ⅲ)离子 乙酸锰(Ⅲ) 羧酸 乙醇酸 乳酸 聚合速度方程 |
POLYMERIZATION OF ACRYLAMIDE INITIATED WITH Mn(III) ION AND CARBOXYLIC ACIDS OR a-HYDRO-XY CARBOXYLIC ACIDS SYSTEMS |
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| QIU Kunyuan,YANG Yingfei and FENG Xinde.POLYMERIZATION OF ACRYLAMIDE INITIATED WITH Mn(III) ION AND CARBOXYLIC ACIDS OR a-HYDRO-XY CARBOXYLIC ACIDS SYSTEMS[J].Acta Polymerica Sinica,1989(5). |
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| Authors: | QIU Kunyuan YANG Yingfei and FENG Xinde |
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| Abstract: | Manganese (HI) acetate can be used as an initiator for vinyl radical polymerization. The presence of carboxylic acid will promote the polymerization of acrylamide and enhance the rate of polymerization. The order of promoting reactivity of acid is a-hydroxy polycarboxylic acid (citric acid) >a-hyroxy carboxylic acis (lactic acid) >a-amino acid (glycine) > carboxylic'acid (n-butyric acid). The effect of concentration of sulfuric acid on the rate of acrylamide polymerization in the aqueous solution has been studied. The overall activation energy of polymerization and the kinetics of polymerization of acrylamide initiated with Mn3+, Mn3+-glycolic acid, Mn3+-lactic acid systems were determined respectively. |
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| Keywords: | Acrylamide radical polymerization Manganese (III) acetate Mn3+-car-boxylic or a-hydroxy carboxylic acid initiation systems |
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