Sequence regulation in living anionic terpolymerization of styrene and two categories of 1,1-diphenylethylene (DPE) derivatives,Polymer Chemistry

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Sequence regulation in living anionic terpolymerization of styrene and two categories of 1,1-diphenylethylene (DPE) derivatives
Polymer Chemistry ( IF 4.1 ) Pub Date : 2020-07-14 , DOI: 10.1039/d0py00731e
Lincan Yang _{1,

2,

3,

4,

5} , Heyu Shen _{1,

2,

3,

4,

5} , Li Han _{1,

2,

3,

4,

5} , Hongwei Ma _{1,

2,

3,

4,

5} , Chao Li _{1,

2,

3,

4,

5} , Lan Lei _{1,

2,

3,

4,

5} , Songbo Zhang _{1,

2,

3,

4,

5} , Pibo Liu _{1,

2,

3,

4,

5} , Yang Li _{1,

2,

3,

4,

5}

Affiliation

Synthesis of functionalized sequence-controlled polymers by utilizing 1,1-diphenylethylene (DPE) derivatives in living anionic polymerization is an effective method. Considering the capacity of sequence information and the diversity of functionalization, further progress of this method may provide a deep understanding of the copolymerization behavior of various DPE derivatives with commercial monomers. In this paper, we introduced two categories of DPE derivatives in anionic polymerization to enrich a variety of sequence-controlled polymers. The kinetics and monomer sequences of the terpolymerizations of St with two DPE derivatives through a one-step and multi-step feeding process were carefully studied. The results show that the terpolymer sequence displayed intriguing transformations by precisely controlling the reactivity difference between DPE derivatives, and facilely regulating the feed strategies of monomer pairs. The gradient, block and random distributions of two categories of DPE derivative units in the chain can be easily generated. The diversity of T_g values of these terpolymers with similar chemical compositions could prove that the various sequences have distinct effects on polymer properties.

中文翻译：

苯乙烯和两类1,1-二苯乙烯（DPE）衍生物的活性阴离子三元聚合中的序列调节

在活性阴离子聚合中利用1,1-二苯乙烯（DPE）衍生物合成功能化序列控制聚合物是一种有效的方法。考虑到序列信息的容量和功能化的多样性，该方法的进一步进展可提供对各种DPE衍生物与商业单体的共聚行为的深入了解。在本文中，我们在阴离子聚合中引入了两类DPE衍生物，以丰富各种顺序控制的聚合物。仔细研究了St与两种DPE衍生物通过一步和多步进料过程进行三元聚合的动力学和单体序列。结果表明，三元共聚物序列通过精确控制DPE衍生物之间的反应性差异并方便地调节单体对的进料策略而显示出有趣的转化。可以轻松生成链中两类DPE衍生单元的梯度，嵌段和随机分布。的多样性这些具有相似化学组成的三元共聚物的T _g值可以证明各种序列对聚合物性能具有明显的影响。

更新日期：2020-08-18

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