稀土催化降冰片烯与苯乙烯、丙烯酸丁酯三元共聚  

Preparation of Ter-polymer of Norbornene, Styrene and Butyl Acrylate Catalyzed by Nd(naph)_3-Al(i-Bu)_3

作　　者：徐卫红[1] 胡敏杰[1] 李正辉[1] 蔡光明[1] 高浩其[1] 房江华[1] 

机构地区：[1]宁波工程学院,浙江宁波315016

出　　处：《宁波工程学院学报》2015年第4期1-4,共4页Journal of Ningbo University of Technology

基　　金：宁波市自然科学基金资助项目(2014A610133);宁波市有机高分子团队项目资助

摘　　要：研究了Nd(naph)3-Al(i-Bu)3(naph=环烷酸)催化降冰片烯(NB)与苯乙烯(ST)、丙烯酸丁酯(BA)共聚反应催化剂组成、反应温度和催化剂浓度等对共聚物产率的影响。用核磁共振和红外光谱方法研究了共聚物的组成,用凝胶渗透色谱分析了共聚物分了量及分子量分布,并从凝胶渗透色谱说明了共聚物为唯一组成。研究表明:Nd(naph)3-Al(iBu)催化剂在温和的反应条件下可合成分子量分布较小的三元共聚物。The ter-polymerization in the presence of neodymium naphthenate [Ndnaph）3] associated with a triisobutyl aluminum [Al（i-Bu）3] catalyst system is investigated in the paper. It is proved by the FT-IR and 13C-NMR analysis that the ter-polymer of NB, St and BA could be obtained after the polymerization with certain catalyst system. The ter-polymerization could happen at the room temperature. However, increasing reaction temperature and/or reaction time could increase the yield of tri-polymer. The average molecular weight and molecular weight distribution （MWD） are tested by GPC. The average molecular weight could be reached and the order of the magnitude of 105 with narrow MWD Mw/Mn is approximately 1.5. Increasing the amount of BA would increase the average molecular weight, but narrow the MWD. The catalyst concentration also influences the polymerization. To obtain a high yield, the optimal catalyst concentration within our research is 6.25×10^-3 mol/L. Adding certain third component in the catalyst system would improve the activity of the catalyst system and increase the yield of tri-polymer.

关 键 词：环烷酸钕 三异丁基铝 降冰片烯 苯乙烯 丙烯酸丁酯 

分 类 号：O643.32[理学—物理化学]