Sustainable rosin acid ester as internal electron donors in Ziegler-Natta catalysts for synthesis of isotactic polypropylene with high melt flow rate

编号 020031105

推送时间 20211004

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 Sustainable rosin acid ester as internal electron donors in Ziegler-Natta catalysts for synthesis of isotactic polypropylene with high melt flow rate

来源期刊 Journal of Macromolecular Science, Part A?

期 第311期

发表时间 20210603

关键词 Bio-derived rosin acid esters;  internal electron donors;  Ziegler-Natta catalyst;  polypropylene;  polymerization; 

摘要 In this contribution, novel bio-derived rosin acid ester compounds have been developed and used as internal electron donors to prepare MgCl2?supported titanium catalysts for propylene polymerization. The results of the polymerization showed that tri-n-amyl maleate, triiso-amyl maleate and tri-n-heptyl maleate as internal electron donors in Ziegler-Natta catalysts all have high polymerization activity and stereoregularity. In particular, the Ziegler-Natta catalyst with tri-n-amyl maleate as the internal electron donor has the highest activity (up to 33.4 kgPP·gCat?1·h?1) for propylene polymerization and the isotacticity of polypropylene is as high as 96.8% determined by?13C NMR. Simultaneously, the obtained polypropylene with a relatively broad molecular weight distribution of 9.0 and melt flow rate of 160.3?g/10?min, which is beneficial to processing and has practical industrial application value when used as the basic material of melt blown cloth for medical mask.

服务人员 尚玮姣

服务院士 宋湛谦

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