阳离子聚合
高分子化学
共单体
共聚物
化学
硫
二氧环烷
单体
开环聚合
玻璃化转变
聚合
亚甲基
聚合物
二氢吡喃
有机化学
催化作用
盐(化学)
作者
Kevin D. Belfield,Feras Abdel-Razzaq
标识
DOI:10.1002/(sici)1099-0518(199708)35:11<2207::aid-pola11>3.0.co;2-i
摘要
Photoinitiated polymerization of 4-methylene-2-phenyl-1,3-dioxolane (1) was carried out using either tris (4-methylphenyl) sulfonium hexafluoroantimonate or 4-decyloxyphenyl phenyliodonium hexafluoroantimonate as initiators. 1H-NMR analyses confirmed exclusive ring-opening while DSC and SEC were used to determine the glass transition temperatures (Tgs) and molecular weights, respectively. Photoinitiated cationic copolymerizations of 1 were investigated with several acyclic and cyclic monomers. Copolymerization of 1 with vinyl ethers and a spiroorthoester resulted in copolymers whose thermal properties were dependent on comonomer ratios. Copolymers of 1 and dihydrofuran or dihydropyran afforded soluble polymers with Tgs significantly higher than the homopolymer of 1. © 1997 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 35: 2207–2219, 1997
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