自愈合凝胶: 结构、性能及展望
摘要
As a smart polymer material, self-healing gel not only can repair the cracks of soft matter, but also potentially solve the problem of interface connection between gels and biological tissues. Therefore, self-healing gel has a critical importance in achieving intelligence, high efficiency and environment-friendly of soft matters. In recent years, on the principle of constitutional dynamic chemistry, a series of new type gels with excellent self-healing performance have been designed by using non-covalent bond and dynamic covalent interaction. In this review, the strategies of molecular design and performance of the self-healing are introduced on the base of analyzing some physical and chemical dynamic self-healing gels. Furthermore, the factors affecting the performance of the self-healing gel are discussed, as well as the challenge, problem and future development of self-healing gel are proposed.