Radical grafting from carbon fiber surface: graft polymerization of vinyl monomers initiated by azo groups introduced onto the surface
Radical grafting from carbon fiber surface: graft polymerization of vinyl monomers initiated by azo groups introduced onto the surface
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碳纤维表面自由基接枝：由引入到表面的偶氮基引发的乙烯基单体的接枝聚合
DOI：
10.1163/156855496x00038
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
A. Yoshida
中科院分区：
文献类型：
--
作者：
K. Fujiki;N. Motoji;A. Yoshida
本文介绍了在碳纤维表面引入偶氮基引发的乙烯基单体自由基接枝聚合反应。本实验使用的碳纤维为聚丙烯腈型。偶氮基团在碳纤维表面的引入是通过4,4'-偶氮（4-氰戊酸）与异氰酸基团的反应实现的，而异氰酸基团是通过二异氰酸酯处理后附着在碳纤维表面的。氮分析表明，经硝酸处理的碳纤维表面偶氮基团的引入量为0.60 × 10-5 mol 9-1。研究了甲基丙烯酸甲酯（MMA）的自由基接枝聚合反应。尽管MMA的热聚合在没有或没有未经处理的碳纤维的情况下稍微进行，但聚合速率相当低。MMA接枝聚合反应发生在碳纤维表面含有偶氮基团的情况下。
This paper describes the radical graft polymerizations of vinyl monomers from carbon fiber surface initiated by azo groups introduced onto the fiber surface. The carbon fiber used in this experiment was the polyacrylonitrile type. The introduction of azo groups onto the carbon fiber surface was achieved by the reaction of 4,4'-azobis (4-cyanopentanoic acid) with isocyanate groups which were previously attached onto the surface by the treatment of the fiber with tolylene 2,4-diisocyanate. The amount of surface azo groups introduced onto nitric acid-treated carbon fiber was determined to be 0.60 x 10-5 mol 9-1 by nitrogen analysis. The radical graft polymerization of methyl methacrylate (MMA) was tried. Though the thermal polymerization of MMA proceeded slightly in the absence or in the presence of untreated carbon fiber, the rate of the polymerization was considerably low. In contrast, the graft polymerization of MMA was initiated in the presence of the carbon fiber having surface azo groups, and part of r...