基于光交联反应的自修复聚合物的研究进展

Research progress of self-healing polymers based on photocrosslinking reaction

自修复聚合物是具有自修复能力的智能材料。相比传统的自修复,光引发自修复具有局部精确调控的优势,其中,引入光响应基团的聚合物因可逆的共价键断裂和重构的交联反应具有良好的自修复性能,并可重复加工利用。综述了基于光交联反应的自修复聚合物的研究进展,阐述了含有光响应基团包括香豆素、肉桂酰和蒽的自修复聚合物的结构设计和修复机制,指出了基于光交联反应的自修复聚合物面临的主要挑战,并对未来的研究方向进行了展望。

Self-healing polymer materials are intelligent materials with self-healing abilities.Compared with traditional self-healing,photo-induced self-healing can achieve precise local regulation.Polymers with photoresponsive groups have good self-healing properties due to the reversible covalent bond cleavage and reconstruction cross-linking reactions.Research progress of self-healing polymer materials based on photocrosslinking reactions was reviewed.The structural design and repair mechanisms of self-healing polymers with photoresponsive groups including coumarin,cinnamoyl and anthracene were described.Main challenges of self-healing polymer materials based on photocrosslinking reactions were identified and the future research were prospected.