50th Anniversary Perspective: Networks and Gels: Soft but Dynamic and Tough
50th Anniversary Perspective: Networks and Gels: Soft but Dynamic and Tough
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DOI：
10.1021/acs.macromol.7b01698
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发表时间：
2017-11-14
期刊：
影响因子：
5.5
通讯作者：
Creton, Costantino
中科院分区：
文献类型：
--
作者：
Creton, Costantino
软聚合物网络在生物医学领域或工程领域的高新技术应用的推动下，最近的发展呈爆炸式增长。我们提出了一个坦率和批判性的概述，目前的理解之间的关系的结构和分子结构的聚合物网络和它们的机械性能，限制自己的柔性聚合物和显示熵弹性制成的软网络。我们特别回顾和比较最近的方法来合成溶胀水凝胶，增强韧性，弹性，但坚韧未填充弹性体和含有动态键的自愈网络。其目的不是为了绘制一个全面的方法目录，而是为了识别和统一控制增韧机制和机械自修复行为的基本原理，并指出剩余的挑战。
Soft polymer networks have seen an explosion of recent developments motivated by new high tech applications in the biomedical field or in engineering. We present a candid and critical overview of the current understanding of the relation between the structure and molecular architecture of polymer networks and their mechanical properties, restricting ourselves to soft networks made of flexible polymers and displaying entropic elasticity. We specifically review and compare recent approaches to synthesize swollen hydrogels with enhanced toughness, resilient but tough unfilled elastomers and self-healing networks containing dynamic bonds. The purpose is less to draw a comprehensive catalogue of approaches than to identify and unify the underlying principles controlling toughening mechanisms and mechanical self-healing behavior and to point out remaining challenges.