New Tetraalkylborate Initiators for Remote Polymerization
New Tetraalkylborate Initiators for Remote Polymerization
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DOI：
10.1021/ma8007543
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发表时间：
2008-12-09
期刊：
影响因子：
5.5
通讯作者：
Fedorov, Andrei V.
中科院分区：
文献类型：
--
作者：
Ermoshkin, Andrey A.;Nikolaeva, Ekaterina S.;Fedorov, Andrei V.
不直接使用光和/或热的丙烯酸酯的聚合是一个重要的目标。我们已经研究了一种系统，其中活化组分在载气流中递送，该载气流不受限制地接近覆盖有待聚合单体的表面。活性成分（H2 O2蒸汽）与涂层组分（四烷基硼酸盐）反应，产生自由基并引发表面层中的聚合。反应性的差异被解释为不同的氧化电位和烷基取代基上的硼原子。自由基捕获实验支持提出的机制。
The polymerization of acrylic esters without direct use of light and/or heat is an important goal. We have investigated a system where the activating component is delivered in a flow of a carrier gas which has unrestricted access to a surface covered with to-be-polymerized monomers. The active ingredient (H2O2 vapor) reacts with coating components (tetraalkylborates) to generate free radicals and initiate polymerization in the surface layer. Differences in reactivity are explained by differing oxidation potentials and alkyl substituents on the boron atom. Radical trapping experiments support the mechanism proposed.