作者：Xiaofang Dong,1 Li Zhang,Zhibo Liu, Min Yang, Zhongyu Duan, Kaihu Hou, Binyuan Liu, IL Kim
关键字：Ziegler–Natta polymerization,polybutene
论文来源：期刊
具体来源：J Appl Polym Sci, DOI: 10.1002/app.40758
发表时间：2014年

Three isomeric 5-norbornene-2,3-dicarboxylic acid diethyl ester (NDDE) with endo-, exo-, and trans-configuration have been synthesized and employed as internal electron donors (IED) in 1-butene polymerization over magnesium chloride supported
Ziegler–Natta catalysts. It was found that the configuration of NDDE plays a key role in tuning the catalyst activity, stereospecificity, molecular weight (MW), and polydispersity index (PDI) of resulting poly(1-butene). The type of catalyst with cis-5-norborneneendo- 2,3-dicarboxylic acid diethyl ester as IED shows the highest catalyst activity, while catalyst with trans-NDDE as IED yields the poly(1-butene) with the highest MW and the most broad PDI. IR results showed that the NDDE with endo-, exo-, and trans-configuration have different coordination way to MgCl2, subsequently affecting the catalysts performance.