再生橡胶已经成为我国第三大橡胶来源，但是由于断键再生过程中的不可控性导致橡胶高分子链断裂，使得再生橡胶的强度大幅下降。本项目拟以多重氢键或金属配位键这两类可逆作用力对通用橡胶进行交联，制备兼具良好力学性质和重塑性的可再生超分子橡胶。以合成两大类修饰有巯基的多重氢键型和金属配位型交联剂为基础，通过巯基与通用橡胶上的烯键之间的点击化学反应高效地将多重氢键和金属配位作用引入到通用橡胶中。研究超分子交联剂的分子构型对通用橡胶交联效率的影响。通过调节氢键给受体以及配位金属的种类的方法，研究超分子作用力强弱与超分子橡胶的力学性能、稳定性和重塑性之间的关系。明确超分子作用力的引入对纳米填料在超分子橡胶内的分散性和增强作用的影响。本项目的实施，不仅为超分子作用力引入到通用橡胶材料内提供了新思路，也为高性能可再生超分子橡胶的设计提供指导。

Recycled rubber material has become third largest source of rubber in China. However, due to the degradation of rubber molecules during unvulcanisation process, the mechanical properties of recycled rubber are greatly impaired. This proposal aims at the fabrication of recyclable supramolecular rubber with good mechanical properties by reversibly crosslinking rubber via multiple hydrogen bonds or coordination interaction. Based on the synthesis of sulfhydryl group modified crosslinkers that have hydrogen bond or coordination interaction, moieties with hydrogen bond or coordination interactions can be easily grafted onto rubber molecules via thiol-ene reaction. Study the influence of the structure of crosslinkers on the degree of crosslinking of obtained supramolecular rubber. Through adjusting the molecular structure of the crosslinker, and studying the mechanical properties of the as-prepared supramolecular rubber, how these factors affect the mechanical performance and remoldability of the supramolecular rubber is investigated in detail. Finally, nano-fillers were used to enhance the mechanical properties of these supramolecular rubber. This proposal not only offers a new route to graft moieties that have supramolecular interactions onto rubber molecules, but also a guidance on the fabrication of recyclable supramolecular rubber.