摘要
研究了体系中存在乙酐时，四氢呋喃在杂多酸催化下进行阳离子开环聚合的反应机理。结果表明，杂多酸—乙酐络合物有较高的引发活性，该反应在笼型结构（四氢呋喃与杂多酸络合形成）中的杂多酸表面进行，经历了四氢呋喃与杂多酸络合、乙酐与杂多酸络合引发、四氢呋喃开环聚合及链终止反应等阶段，建立了以笼型结构为中心的机理模型。
Heteropolyacid aceticanhydride has high catalysis activity in the polym er ization oftetrahydrofuran. The polym erization m echanism w as investigated in this w ork.Itw as found from experim ents show ed that the polym erization process includes four stepsas follow ing:(1) Ligation of tetrahydrofuran and heteropolyacid.(2) Chain initiation:(3) Chain propagation:(4) Chain term ination:
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
1999年第3期288-294,共7页
Chemical Reaction Engineering and Technology
