摘要
研究了氮杂环鎓盐协同γ射线引发氧化环己烯阳离子开环聚合反应。在研究阳离子聚合阻聚剂、不同气氛条件及聚氧化环己烯分子量和分布后,认为在反应体系中鎓盐氧化射线产生的自由基成为阳离子,并向体系贡献弱亲核性阴离子而引发氧化环己烯阳离子开环聚合。讨论了不同极性溶剂对该聚合反应的影响,同时初步研究了引发此聚合反应活性中心。
A study was carried out on radiation-induced cationic polymerization enhanced by the N-Alkoxypyridinium salt having relatively stable nonnucleophilic anion ( PF6 ). After investigations on the cationic inhibitors, different atmosphere conditions and the molecular weight and its distribution, it was proved that the cationic polymerization to take place in CHO/ CH2Cl2 or C6H6/ EMP+PF6 system on irradiation with theγ-rays. The onium not only oxidated α-alkoxyalkyl radicals, produced from CHO in dichloromethane, to the correspondings cations, but also gave nonnucleophilic anions PF6 for the polymerization system. A preliminary discussion is made on the effect of different polar solvents to reactive centers .
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
北大核心
2003年第2期94-98,共5页
Journal of Radiation Research and Radiation Processing
