Asymmetric copolymers: Neither block nor random

不对称共聚物：既不是嵌段共聚物，也不是无规共聚物

基本信息

批准号：
286983008
负责人：
Dr. Carlos Antioco Guerrero Sanchez, Ph.D.
金额：
--
依托单位：
Laboratoire des Intéractions Moléculaires et Réactivité Chimique et Photochimique (IMRCP) UMR 5623
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2015
资助国家：
德国
起止时间：
2014-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/286983008?language=en
关键词：
Asymmetric copolymers Neither block nor

项目摘要

The goal of the ASYMCOPO project is to develop new materials that mimic the useful properties of gradient copolymers, but which do not require complex synthetic procedures for their preparation. Gradient copolymers, whose composition varies continuously as a function of chain length, are an intriguing class of materials with many potential applications, including as shock- and noise-absorbers and as interfacial stabilizers. However, the preparation of a polymer with a pre-defined gradient of composition requires a semi-continuous process with careful control over monomer addition and constant feedback in order to regulate the composition at each stage of the polymerization. It has recently been noted that the very idea of a gradient copolymer is something of a contradiction in terms: while the average composition of all the chains of a polymer may vary smoothly from one end of the chain to the other, each individual chain is composed of discrete monomer units, and at any point in the chain the composition must take one of only two possible values. Thus, polymers which, on average, exhibit a composition gradient contain a broad distribution of structures. Furthermore, it is impossible to reconstruct the composition gradient of the entire polymer from a single polymer chain. It is thus natural to ask, what is the defining structural feature of a gradient copolymer? And can these properties be mimicked using structures that are easier to prepare, using well-understood batch polymerization processes? In the ASYMCOPO project we aim to answer this question by introducing the concept of asymmetric copolymers: polymers that are intermediate in structure between block and random copolymers. We have developed a framework for the classification of this class of polymers, centered on the concept of a moment of asymmetry, which we will use to guide our research in first synthesizing, then exploring the properties of this new class of materials. In particular, we seek to define structures consisting of 2, 3, or 4 random copolymer segments which mimic the useful properties of gradient copolymers, but are substantially easier to synthesize. This project requires the preparation of an extensive library of copolymers of different structures, and hence necessitates the involvement of a laboratory with expertise in high-throughput polymer synthesis and characterization. The Institute for Organic and Macromolecular Chemistry (IOMC), in Jena, Germany, is the European leading research group in this domain. In parallel, synthesis of well-defined gradient copolymers requires careful control of polymerization conditions, employing the expertise of the Laboratoire des Intéractions Moléculaires et Réactivité Chimique et Photochimique (IMRCP) laboratory of Toulouse, France, in polymerization kinetics, polymer synthesis and characterization.

Asymcopo项目的目标是开发模仿梯度共聚物的有用特性的新材料，但不需要复杂的合成程序进行准备。梯度共聚物的组成随着链长的函数而连续变化，是一类有趣的材料类，具有许多潜在的应用，包括冲击和噪声 - 吸收器和界面稳定器。但是，与预定义组成梯度的聚合物的制备需要半连续的过程，并仔细控制添加月份和恒定反馈，以调节聚合的每个阶段的组成。最近已经注意到，梯度共聚物的概念在术语上是矛盾的：虽然聚合物的所有链的平均组合物的平均组成可能从链的一端到另一端，但每个单独的链条都由离散的单体单元组成，并且在链中的任何时候都必须仅占两个可能的值。那是平均而言，聚合物暴露了包含结构广泛分布的组成梯度。此外，不可能从单个聚合物链中重建整个聚合物的组成梯度。因此，自然要问，梯度共聚物的定义结构特征是什么？可以使用易于理解的批处理聚合过程使用易于准备的结构来模仿这些属性？在Asymcopo项目中，我们旨在通过引入不对称共聚物的概念来回答这个问题：块和随机共聚物之间结构中间的聚合物。我们已经开发了一个将这类聚合物分类的框架，以不对称时刻的概念为中心，我们将用来指导我们的研究中的研究，然后探索这种新材料的特性。特别是，我们试图定义由2、3或4个随机共聚物段组成的结构，这些结构模仿梯度共聚物的有用特性，但基本上更容易合成。该项目需要准备大量不同结构的共聚物库，因此有必要涉及实验室参与高通量聚合物合成和表征的专家。德国耶拿的有机和大分子化学研究所（IOMC）是该领域的欧洲领先研究小组。同时，使用明确定义的梯度共聚物的合成需要仔细控制聚合条件，并采用了Laboratoire desintéractionsMoléculairesetréactivitéChimiqueet photochimique（imrcp）在法国图卢兹的实验室，在法国图卢兹实验室，在聚合Kinetics，Polymerics，Polymersessiss和特征中。

项目成果

期刊论文数量（5）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Asymmetric Copolymers: Synthesis, Properties, and Applications of Gradient and Other Partially Segregated Copolymers.

DOI：
10.1002/marc.201800357
发表时间：
2018-09
期刊：
Macromolecular rapid communications
影响因子：
4.6
作者：
Junliang Zhang;Bárbara Farías-Mancilla;M. Destarac;U. Schubert;Daniel J. Keddie;C. Guerrero-Sánchez
通讯作者：
Junliang Zhang;Bárbara Farías-Mancilla;M. Destarac;U. Schubert;Daniel J. Keddie;C. Guerrero-Sánchez

Kinetic and Copolymer Composition Investigations of the Free Radical Copolymerization of 1-Octene with Glycidyl Methacrylate

DOI：
10.1002/macp.201800084
发表时间：
2018-06
期刊：
Macromolecular Chemistry and Physics
影响因子：
2.5
作者：
M. Rosales-Guzmán;O. Pérez‐Camacho;R. Torres-Lubian;S. Harrisson;U. Schubert;C. Guerrero‐Sanchez;E. Saldívar‐Guerra
通讯作者：
M. Rosales-Guzmán;O. Pérez‐Camacho;R. Torres-Lubian;S. Harrisson;U. Schubert;C. Guerrero‐Sanchez;E. Saldívar‐Guerra

High-Throughput Synthesis of Polymers

聚合物的高通量合成