Compositional Distribution of Binary Living Copolymers and Their End Sequences,Macromolecular Theory and Simulations

当前位置： X-MOL 学术 › Macromol. Theor. Simul. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Compositional Distribution of Binary Living Copolymers and Their End Sequences
Macromolecular Theory and Simulations ( IF 1.8 ) Pub Date : 2021-04-25 , DOI: 10.1002/mats.202100002
Olga Trhlíková ₁ , Zuzana Walterová ₁ , Miroslav Janata ₂ , Lívia Kanizsová ₁ , Jiří Horský ₁

Affiliation

Statistical analysis is carried out for the compositional distribution (CD) of binary copolymers prepared by living copolymerization. The CDs of both block and random (Bernoullian) binary copolymers are found to be the product of two Poisson distributions. The analysis is further developed for instantaneous first-order Markovian copolymers (the terminal model). The relations are derived for the CD of i) copolymers with fixed polymerization degree and ii) of copolymers with variable polymerization degree. The relations ad (i) describe also CD of copolymer end sequences; however, they cannot be used for interpretation of tandem mass spectrometry where end-sequence CD for isobaric copolymers is required. Such relations are also derived. Stepwise application of the equations affords approximation of high-conversion living copolymerization. Fair agreement of the derived relations with kinetic Monte–Carlo simulation and qualitative agreement with the experimental data on n-butyl acrylate/methyl methacrylate copolymers prepared by quasi-living radical polymerization is found.

中文翻译：

二元活性共聚物的组成分布及其末端序列

对活性共聚制备的二元共聚物的组成分布(CD)进行统计分析。发现嵌段和无规（伯努利）二元共聚物的 CD 是两个泊松分布的乘积。该分析进一步发展为瞬时一阶马尔可夫共聚物（终端模型）。关系式是针对 i) 具有固定聚合度的共聚物和 ii) 具有可变聚合度的共聚物的 CD 导出的。关系式 ad (i) 还描述了共聚物末端序列的 CD；然而，它们不能用于解释串联质谱，其中需要同量异位共聚物的末端序列 CD。这种关系也是推导出来的。方程的逐步应用提供了高转化率活性共聚的近似值。

更新日期：2021-04-25

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11