Synthesis and Characterization Functional Isotactic Polypropylene Materials with Well-defined Structure

摘要：

Catalyzed by (pyridylamido)hafnium, a series of halogen-functionalized isotactic polypropylenes (iPP) were synthesized via the stereospecific copolymerization of propylene with ω-halo-α-alkenes.The high molecular weight (MW) functional iPPs possessing abundant iodoalkene units and high isotacticity were easily obtained under mild conditions with excellent catalytic activity.Detailed in situ NMR analysis, DFT calculations and the copolymerization of propylene with a series of ω-halo-α-alkenes suggest that the ω-iodine group has very weak interaction with the active Hf center, and ω-halo-α-alkenes with long chain show a better possibility to be copolymerized with propylene.The thiol-halogen click chemistry between halogenated iPPs and thiols was systematically investigated, based on which, various polar groups including hydroxyl, ester, aryl, thiazolyl and amino have been successfully introduced intoiPP in a quantitative way, by employing iodinated iPP as the highly reactive intermediate.

作者: Yuesheng Li Xiaoyan Wang

作者单位: School of Material Science and Engineering, Tianjin University, Tianjin 300072

会议类型: 国际会议

会议名称: 9th International Symposium on High-Tech Polymer Materials(第9届国际高技术高分子材料学术会议)(HTPM-9)

会议地点: 郑州

会议语种:英文

页码: 11-11

在线出版日期: 2016-07-11（万方平台首次上网日期，不代表论文的发表时间）