摘要
考察了溶剂、单体浓度、引发剂等因素对N -乙烯基吡咯烷酮 (NVP)自由基聚合反应的影响 ,以苯、95%乙醇、蒸馏水为对象 ,重点考察了溶剂极性、单体与溶剂混合液黏度对NVP聚合反应速率、链增长速率常数及聚合物相对分子质量等的影响 .并进一步探讨了NVP与N ,N -亚甲基双丙烯酰胺在溶剂中的交联反应特性 ,发现某些无机盐水溶液有利于NVP的交联聚合反应 ,并用“笼蔽效应”作了解释 .
In this paper,the influences of solvents, monomer conncentration and initiator concentration on radical polymerization of N -vinylpyrrolidone(NVP) are investigated. Especially, benzene, ethanol, distilled water are experimented as solvents to investigate the influences of solvent polarities, viscosities of mixture of monomer and solvent on polymerization rate, chain propagation rate and relative molecular mass of polyvinylpyrrolidone. Furthermore, crosslinking polymerization properties of N -vinylpyrrolidone and N,N - methylenebisacrylamine(NNMP) are studied. It is found that a higher yield of crosslinking polyvinylpyrrolidone(PVPP) can be obtained in a aqueous solution of some inorganic salt. Some explanations are presented.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2000年第3期367-371,共5页
CIESC Journal
基金
国家自然科学基金!(No .2 99760 0 7)
广东省自然科学基金!(No .990 1 2 9)资助项目
关键词
乙烯基吡咯烷酮
自由基聚合
溶剂
PVP
N -vinylpyrrolidone, radical polymerization, solvent, cage effect
