ELECTRON-SPIN-RESONANCE STUDIES ON RADICAL POLYMERIZATION OF VINYL ETHERS
ELECTRON-SPIN-RESONANCE STUDIES ON RADICAL POLYMERIZATION OF VINYL ETHERS
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DOI：
10.1002/pola.1986.080240510
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发表时间：
1986-05-01
影响因子：
--
通讯作者：
KUWAE, Y
中科院分区：
文献类型：
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作者：
KAMACHI, M;TANAKA, K;KUWAE, Y
乙烯基醚自由基聚合的ESR研究是在−50°C至室温下使用二叔丁基过氧化物作为光引发剂进行的。很好地解决了ESR谱被分配到乙烯基醚的传播自由基。它们的α质子超精细分裂常数约为16 G，小于丙烯酸乙酯和乙酸乙烯酯。较小的常数归因于偏离sp2杂化结构的传播自由基。本文根据ESR研究结果，讨论了乙烯基醚不能自由基聚合得到高聚物的原因。
ESR studies on the radical polymerization of vinyl ethers were performed from −50°C to room temperature using di‐tert‐butylperoxide as a photoinitiator. Well resolved ESR spectra were assigned to propagating radicals of vinyl ethers. Their hyperfine splitting constants due to α‐proton were about 16 G, being smaller than those of ethyl acrylate and vinyl acetate. The smaller constants is ascribed to a deviation of the propagating radicals from sp2hybrid structure. The reason why high polymers are not obtained from vinyl ethers by radical polymerization is discussed on the basis of information from the ESR studies.