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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项目的目标是开发新材料，模拟梯度共聚物的有用特性，但不需要复杂的合成程序来制备。梯度共聚物，其组成作为链长的函数连续变化，是一类具有许多潜在应用的有趣的材料，包括作为减震器和噪音吸收器以及作为界面稳定剂。然而，具有预定组成梯度的聚合物的制备需要半连续方法，其中仔细控制单体添加和恒定反馈，以便在聚合的每个阶段调节组成。最近人们注意到，梯度共聚物的概念本身在某些方面是矛盾的：虽然聚合物的所有链的平均组成可以从链的一端到另一端平滑地变化，但每个单独的链由离散的单体单元组成，并且在链中的任何一点上，组成必须采取只有两个可能值之一。因此，平均而言表现出组成梯度的聚合物包含宽的结构分布。此外，不可能从单个聚合物链重建整个聚合物的组成梯度。因此，很自然地会问，梯度共聚物的定义结构特征是什么？这些特性是否可以用更容易制备的结构来模仿，使用众所周知的间歇聚合过程？在ASYMCOPO项目中，我们的目标是通过引入不对称共聚物的概念来回答这个问题：在结构上介于嵌段和无规共聚物之间的聚合物。我们已经开发了这类聚合物的分类框架，以不对称时刻的概念为中心，我们将使用它来指导我们的研究，首先合成，然后探索这类新材料的特性。特别是，我们试图定义由2、3或4个无规共聚物链段组成的结构，这些链段模拟梯度共聚物的有用特性，但更容易合成。该项目需要制备大量不同结构的共聚物库，因此需要具有高通量聚合物合成和表征专业知识的实验室的参与。位于德国耶拿的有机和高分子化学研究所是这一领域的欧洲领先研究小组。同时，合成明确的梯度共聚物需要仔细控制聚合条件，采用法国图卢兹的分子间相互作用和反应化学与光化学实验室（IMRCP）在聚合动力学、聚合物合成和表征方面的专业知识。

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