高等学校化学学报

高等学校化学学报

• 研究快报 • 上一篇    

降冰片烯开环易位聚合反应的分子量及分子量分布控制

杜创1, 王春雨2, 张国1, 汤钧2   

    1. 吉林大学材料科学与工程学院,
    2. 化学学院, 超分子结构与材料教育部重点实验室, 长春 130012
  • 收稿日期:2007-05-28 修回日期:1900-01-01 出版日期:2007-10-10 发布日期:2007-10-10
  • 通讯作者: 汤钧

Molecular Weight and Molecular Weight Distribution Control of Ring-opening Metathesis Polymerization of Norbornene

DU Chuang1, WANG Chun-Yu2, ZHANG Guo1, TANG Jun2*   

    1. College of Materials Science and Engineering;
    2. Key Laboratory of Supramolecular Structure and Materials, Ministry of Education, College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2007-05-28 Revised:1900-01-01 Online:2007-10-10 Published:2007-10-10
  • Contact: TANG Jun

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被引次数

13

摘要： 使用Grubbs催化剂催化降冰片烯单体进行开环易位聚合反应, 研究了催化剂搅拌溶解时间、聚合反应的溶剂极性和三苯基膦的加入等反应条件对降冰片烯单体ROMP反应分子量及分子量分布的影响, 从而得到降冰片烯ROMP反应的最佳条件.

关键词: 开环易位聚合, 降冰片烯, 分子量, 分子量分

Abstract: Ring-opening metathesis polymerization of norbornene catalyzed by Grubbs catalyst [(PCy3)2·(Cl)2Ru=CHPh] was carried out. The results of 1H NMR demonstrated that the polymerization of the norbornene monomer proceeded by the ROMP mechanism. The molecular weight and molecular weight distribution of this reaction can be controlled by changing the stirring time of catalyst, choosing different solvents and the adding of PPh3 during the polymerization. The results show that stirring the catalyst for 15 min, using more polar solvent and adding 2 equiv of PPh3 can optimize the conditions of this reaction. The polydispersity indices(PDIs) of the poly(norbornene) were nearly monodisperse(PDIs about 1.18).

Key words: Ring-opening metathesis polymerization, Norbornene, Molecular weight, Molecular weight distribution

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