乙烯与极性单体共聚合制备功能性超支化聚乙烯  

The Copolymerization of Ethylene and Polar Comonomers for the Preparation of Functional Hyperbranched Polyethylene

作　　者：杨楚峰[1] 范宏[1] 郭春文[1] 万金涛[1] 李伯耿[1] 

机构地区：[1]浙江大学聚合反应工程国家重点实验室,杭州310027

出　　处：《科技通报》2008年第3期395-399,405,共6页Bulletin of Science and Technology

基　　金：国家自然科学基金资助项目(No.20476090)

摘　　要：研究了后过渡金属催化剂(MHNB)体系,乙烯与极性单体(2,2-二甲基-4-戊烯醇)进行淤浆共聚反应时,极性单体的官能团的保护基团类型对极性单体与乙烯的聚合活性影响。采用1H-NMR和13C-NMR波谱对聚合物中极性单体的含量、支化度和支链结构进行了表征。研究表明,经烷基或芳基硅烷基团保护的极性单体与乙烯在MHNB催化作用下,通过共聚可以得到结构新颖的功能性超支化聚乙烯。In this paper, the slurry copolymerization of ethylene with polar comonomer （2,2-dimethyl-4-pentenol） was catalyzed by the late transition metal catalyst（MHNB） system. The influence of the protecting group structure of the comonomer on the copolymerization activity was investigated. The incorporate rate of polar comonomer and the degree, topology of branches of copolymer were analyzed by ^1 H-NMR and ^13C-NMR. It was demonstrated that the novel functional hyperbanched polyethylene could be prepared by the copolymerization of ethylene and polar comonomers protected by alkyl or aromatic silyl group.

关 键 词：后过渡金属催化剂 功能性 超支化 聚乙烯 

分 类 号：TQ314.2[化学工程—高聚物工业]