摘要
聚合物材料在使用过程中受到损伤,就会丧失原有的力学强度和功能.修复功能能够延长聚合物材料的使用寿命、减少原料浪费并提高材料性能的可靠性.赋予聚合物材料修复性能是可持续发展社会对聚合物材料设计的重要需求.本文系统地介绍了本研究组发展的基于溶液中复合的聚合物复合物构筑自/可修复聚合物材料的方法,以及基于高密度的超分子可逆作用力及聚合物复合原位生成的纳米粒子的协同,解决聚合物复合材料的良好修复性能与高力学强度之间矛盾的策略.基于聚合物复合的方法,我们成功制备了聚合物凝胶、弹性体及高强度聚合物复合材料,并实现了上述修复材料在防雾、质子传导和传感等方面的功能.聚合物复合的方法为制备具有优异力学性能和功能的自/可修复聚合物材料提供了新思路.
When polymer materials are damaged during usage, they will lose their original mechanical strength and function. Polymer materials with healability can have an extended service life, reduce raw material consumption and improve reliability. Endowing polymer materials with self-healing/healable capacity is an important requirement for the development of sustainable society. Polymeric complexes can be produced by directly mixing polymers with complementary interactions or copolymerization/sequential homopolymerization of two kinds of monomers with complementary interactions in bulk solutions. Polymer complexation provides a flexible method for the fabrication of polymer composite materials crosslinked by noncovalent supramolecular interactions or dynamic covalent bonds. Meanwhile, the mechanical properties of the polymeric composite materials derived from polymeric complexes can be conveniently tailored. This paper gives a comprehensive summary of the solution-based polymeric complexation method for the fabrication of self-healing/healable polymer materials developed in our research group. Based on the polymeric complexation method, we have successfully fabricated polymeric hydrogels, elastomers and high-strength polymer composites with excellent healing capacity. We also demonstrate that the contradiction between the satisfactory healability and high mechanical strength of polymer composites can be solved by integrating a high density of reversible supramolecular interactions and in situ-formed rigid polymeric complex nanoparticles in the targeted polymer composites. The polymeric complex nanoparticles can serve as nanofillers and cross-linkers to significantly improve the mechanical strength of the polymer composites. Meanwhile, the reversibility of supramolecular interactions facilitates the mobility of polymer chains and enables highly efficient healing of damaged composites to restore their original mechanical properties. Moreover, we also fabricated self-healing/healable polymer composite materials with functions such as antifogging, proton conduction and sensing. These polymer composite materials can heal mechanical damage as well as restore their original functions. We believe that the polymeric complexation method provides new avenue for the fabrication of self-healing/healable polymer materials with excellent mechanical properties and functions.
作者
李懿轩
孙俊奇
Yi-xuan Li;Jun-qi Sun(State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012)
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2020年第8期791-803,共13页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号21935004)资助项目。
关键词
聚合物复合物
超分子化学
自修复材料
非共价键作用力
超分子材料
Polymer complexes
Supramolecular chemistry
Self-healing materials
Non-covalent bonds
Supramolecular materials
作者简介
通讯联系人:孙俊奇,E-mail:sun_junqi@jlu.edu.cn。
