The effect of monomer structure on oxygen inhibition of (meth)acrylates photopolymerization
The effect of monomer structure on oxygen inhibition of (meth)acrylates photopolymerization
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DOI：
10.1016/j.polymer.2004.06.060
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发表时间：
2004-08-19
期刊：
影响因子：
4.6
通讯作者：
Hoyle, CE
中科院分区：
文献类型：
--
作者：
Lee, TY;Guymon, CA;Hoyle, CE
利用photo-DSC和实时FTIR（RTIR）研究了含醚基单体自由基光聚合过程中的氧阻聚作用。选择含有不同数量和类型醚基的甲基丙烯酸酯和丙烯酸酯，以确定醚基浓度和结构对氧抑制的影响。此外，还比较了甲基丙烯酸酯和丙烯酸酯自由基聚合的氧敏性。与丙烯酸酯相比，甲基丙烯酸酯对氧的敏感性低得多。以聚四氢呋喃和聚丙二醇为模型体系，考察了醚基对空气中聚合动力学的影响。发现含醚基的（甲基）丙烯酸酯的聚合对氧抑制相对不敏感。氧抑制的减少通过一系列链转移/氧清除反应发生。(C)2004年由Elsevier Ltd.出版。
Oxygen inhibition during the free-radical photopolymerization of various monomers containing ether groups was investigated using photo-DSC and real-time FTIR (RTIR). Methacrylates and acrylates containing different number and types of ether groups were selected to determine the effects of ether group concentration and structure on oxygen inhibition. Also, the oxygen sensitivity of the free-radical polymerization of methacrylate and acrylate was compared. Compared to acrylates, methacrylates are much less sensitive to oxygen. Model poly(tetramethylene oxide) and poly(propylene glycol) system were evaluated to determine the effect of ether groups on polymerization kinetics in air. The polymerizations of the (meth)acrylates containing ether groups were found to be relatively insensitive to oxygen inhibition. The reduction of oxygen inhibition occurs by a series of chain transfer/oxygen scavenging reactions. (C) 2004 Published by Elsevier Ltd.