Integrated Effect of Comonomer and Catalyst on Copolymerization of Ethylene with Allylcyclopentane or Allylcyclohexane by Using Metallocene Catalysts,ChemistrySelect

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Integrated Effect of Comonomer and Catalyst on Copolymerization of Ethylene with Allylcyclopentane or Allylcyclohexane by Using Metallocene Catalysts
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-07-02 , DOI: 10.1002/slct.202001213
Wei Wang ₁ , Liping Hou ₁ , Taoyi Zhang ₁

Affiliation

An integrated effect of the catalysts and the comonomers has been observed when the copolymerizations of ethylene with allylcyclopentane or allylcyclohexane are conducted by using two metallocene catalysts. The effect results in the differences in the microstructure and macroscopic properties (e. g. the melting point and enthalpy) of the copolymers. Under the different combination of the catalysts and the comonomers, the microstructure of copolymer changes from ideal random to rich successive comonomer segment, although the two comonomers are very similar in the structure. Allylcyclohexane prefers to form the copolymer with the feature of rich successive comonomer segment, and the more random structure could be observed in the copolymer of allylcyclopentane. The catalyst used makes the difference even more pronounced.

中文翻译：

共聚单体和催化剂对茂金属催化乙烯与烯丙基环戊烷或烯丙基环己烷共聚合的综合作用

当通过使用两种茂金属催化剂进行乙烯与烯丙基环戊烷或烯丙基环己烷的共聚时，已经观察到催化剂和共聚单体的综合作用。该效果导致共聚物的微观结构和宏观性质（例如熔点和焓）不同。在催化剂和共聚单体的不同组合下，尽管两种共聚单体的结构非常相似，但共聚物的微观结构却从理想的无规转变为丰富的连续的共聚单体链段。烯丙基环己烷倾向于形成具有丰富的连续共聚单体链段特征的共聚物，并且在烯丙基环戊烷的共聚物中可以观察到更多的无规结构。所使用的催化剂使差异更加明显。

更新日期：2020-07-02

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