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本文报道了用甲基烯丙醇钠引发环氧乙烷开环聚合制备带端甲基烯丙基聚氧乙烯大分子单体的方法。对获得的大分子单体,经链的结构鉴定和端基分析后,考察了其与苯乙烯参与阳离子溶液共聚的能力。结果表明,随共聚反应条件的改变,能够获得一系列不同分子量和支链数的聚(苯乙烯—g—氧化乙烯)共(?)物(分子量:1～6万,平均支链数:1.2～8.4)。但共聚反应具有较低的产率,解释为由于阳离子聚合反应的快速引发和增长的特点与大分子单体的聚合能力受分子链穿透运动性的影响的矛盾,导致有较多量的聚苯乙烯均聚物的生成的结果。
In this paper, a method for preparing poly (ethylene glycol) macromonomer with terminal methallyl alcohol by ring opening polymerization of ethylene oxide was reported. The obtained macromonomer, the structural identification of the chain and the end group analysis, its ability to participate in the copolymerization of styrene and cationic solution. The results showed that a series of poly (styrene-co-ethylene oxide) co-polymers with different molecular weight and number of branches (molecular weight: 1 ~ 60000 and average number of branches: 1.2 ~ 8.4). However, the copolymerization reaction with a lower yield, explained that due to the rapid initiation and growth of cationic polymerization reaction characteristics and macromonomer polymerization ability of the molecular chain movement through the impact of the contradiction, resulting in a larger amount of polybenzene The result of the production of ethylene homopolymer.