Camphorquinone-amines photoinitating systems for the initiation of free radical polymerization
Camphorquinone-amines photoinitating systems for the initiation of free radical polymerization
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DOI：
10.1016/s0032-3861(03)00568-8
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发表时间：
2003-08-01
期刊：
影响因子：
4.6
通讯作者：
Rabek, JF
中科院分区：
文献类型：
--
作者：
Jakubiak, J;Allonas, X;Rabek, JF
介绍了醌/受阻哌啶、三甘醇二甲基丙烯酸酯的可见光光引发聚合的结果。哌啶作为共引发剂的有效性进行了比较，与一些脂肪族胺和芳香族胺。本研究的主要目的是研究光引发聚合反应的机理。引发聚合的反应性自由基是通过三重态的邻苯二酚夺取氢原子的机制形成的，由光诱导的电子转移介导。影响光聚合的脂肪胺和芳香胺的不同效率的解释的基础上不同的猝灭反应性的激发态的邻苯二酚。(C)2003 Elsevier Ltd.保留所有权利。
Results of the camphorquinone/hindered piperidines, visible-light photoinduced polymerization of triethyleneglycol dimethacrylate are presented. The effectiveness of piperidines as a coinitiator is compared with a few aliphatic amines and aromatic amines. The main objective in this research was to study the mechanism of photoinitiation of polymerization. Reactive radicals that initiate the polymerization are formed by a mechanism of hydrogen atom abstraction by the triplet state of camphorquinone, mediated by photoinduced electron transfer. The different efficiencies of the aliphatic amines and of the aromatic amines affecting photopolymerization are explained on the basis of the different quenching reactivities of the excited states of camphorquinone. (C) 2003 Elsevier Ltd. All rights reserved.