摘要
研究了末端为甲基丙烯酸酯型的聚环氧乙烷(PEO)大分子单体分别与苯乙烯(S)、甲基丙烯酸甲酯(MMA)、丙烯酸甲酯(MA)的溶液自由基共聚动力学.结果表明,大单体和小单体的共聚合体系由于粘度的影响,使其有别于小单体之间的共聚合体系.大单体的接枝效率受小单体的结构、大单体的分子量等因素的影响,接枝效率最高为81.3%,用Kennedy的积分式对小分子单体的竞聚率γ_2值进行了估算,并计算求得接枝共聚物的平均接枝数为10～14。
Copolymerization of ω-methacryloyl polyox yethylene macro-mers with styrene(S)、methyl methacrylate(MMA) or methyl acrylate(MA)in benzene using AIBN as initiator was studied.The effact of differenkind of monomers and molecular weight of the macromers on the graftingefficiency were reported.The highest grafting efficiency can reach 81.3%and the reactivity ratios of small monomers with macromers were deter-mined according to Kennedy's Integral Equation.The average graftingnumber of copolymers varies from 10 to 14.
出处
《湘潭大学自然科学学报》
CAS
CSCD
1993年第3期77-82,共6页
Natural Science Journal of Xiangtan University
基金
国家自然科学基金
关键词
大分子单体
接枝共聚物
聚环氧乙烷
macromer
graft copolymer
polyoxyethylene
grafting efficiency
radical copolymerization
