In-chain functionalized syndiotactic 1,2-polybutadiene by a Ziegler-Natta iron(iii) catalytic system.

In-chain functionalized syndiotactic 1,2-polybutadiene by a Ziegler-Natta iron(iii) catalytic system.
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齐格勒·纳塔铁 (iii) 催化体系链内官能化间同立构 1,2-聚丁二烯

DOI:
10.1039/c9ra06499k
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发表时间:
2019-10-15
期刊:
影响因子:
3.9
通讯作者:
Zhang, Xuequan
Zhang, Xuequan
中科院分区:
化学3区
文献类型:
--
作者:
Liang, Shanshan;Zhang, Huaqiang;Cong, Rixin;Liu, Heng;Wang, Feng;Hu, Yanming;Zhang, Xuequan

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本文报道了1,3-丁二烯与四种带有氨基和烷氧基的1-取代的1,3-二烯共聚单体通过齐格勒-纳塔铁(iii)催化体系进行共聚以获得链内官能化的间同立构1,2-聚丁二烯。极性共聚单体含量可以通过改变共聚单体负载量或聚合条件容易地调节,从而提供具有不同量的官能度的官能化间同立构1,2-聚丁二烯。极性共聚单体的引入对所得聚合物的1,2-含量和立构规整性影响不大,得到高达85%的1,2-结构和81.0%的rrrr五单元组。加入极性共聚单体后,聚合物的表面性能得到了显著改善,水接触角显著降低。链内官能化间同立构1,2-聚丁二烯,通过齐格勒-纳塔铁(iii)催化体系使1,3-丁二烯和1-取代的1,3-二烯共聚单体共聚。
Copolymerization of 1,3-butadiene with four 1-substituted 1,3-diene comonomers bearing amino and alkyoxy groups by a Ziegler–Natta iron(iii) catalytic system to access in-chain functionalized syndiotactic 1,2-polybutadiene is reported herein. The polar comonomer content can be easily regulated by varying the comonomer loadings or polymerization conditions, affording functionalized syndiotactic 1,2-polybutadiene with different amounts of functionalities. The incorporation of a polar comonomer showed little influence on the 1,2-content and stereoregularity of the resulting polymers, giving a 1,2-structure as high as ∼85% and an rrrr pentad of 81.0%. Significantly improved surface properties of the polymers was obtained after incorporation of polar comonomer, as revealed from the remarkably decreased water contact angles. In-chain functionalized syndiotactic 1,2-polybutadiene through copolymerization of 1,3-butadiene and 1-substituted 1,3-diene comonomer by a Ziegler–Natta iron(iii) catalytic system.
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