Polymerization and copolymerization of methyl 2-(chloromethyl)acrylate in competition with addition-fragmentation
Polymerization and copolymerization of methyl 2-(chloromethyl)acrylate in competition with addition-fragmentation
复制标题
2-(氯甲基)丙烯酸甲酯竞争加成断裂的聚合和共聚
DOI：
10.1021/ma00071a019
复制
发表时间：
1993
期刊：
影响因子：
5.5
通讯作者：
S. Aoki
中科院分区：
文献类型：
--
作者：
B. Yamada;S. Kobatake;S. Aoki
研究了2-（氯甲基）丙烯酸甲酯（MCMA）的低分子量聚合和共聚合，并伴随MCMA自由基的β-断裂，形成2-甲氧羰基烯丙基端基。1H NMR谱表明，当Mn =4400时，聚MCMA的断链过程主要是断裂.在这种情况下，平均每33个增长步骤发生一次断裂，在60 ℃下增长与断裂的速率常数之比估计为11 L/mol
Polymerization and copolymerization of methyl 2-(chloromethyl)acrylate (MCMA) to low molecular weight with accompanying β-fragmentation of the MCMA radical leadingto the 2-carbomethoxyallyl end group were investigated. The 1 H NMR spectrum of poly(MCMA) revealed that the fragmentation is predominant as the chain-stopping process when M n =4400. In this case, the fragmentation occurred every 33 propagation steps on average, and the ratio of the rate constants for propagation to fragmentation was estimated to be 11 L/mol at 60 o C