Vegetable oil-based vitrimers are innovative renewable polymers that show promising applications. However, their applications are limited by their poor mechanical properties and the need for the use of a catalyst in their preparation. In this study, the renewable tung oil underwent the methyl esterification reaction, Diels-Alder reaction, and epoxidation reaction to obtain TOTGE with terminal epoxy groups. TOTGE was cured with citric acid (CA) to obtain catalyst-free, self-healing, high mechanical strength fully bio-based TOTGE–CA vitrimers. Due to the high reactivity of their terminal epoxy groups, the vitrimer networks have a high density of crosslinks, and thus show good thermal stability and mechanical properties. The curing agent CA introduces a large number of hydroxyl (−OH) groups into the vitrimers and these form abundant hydrogen (H) bonds. The −OH groups in the vitrimers act as a catalyst, allowing topological network rearrangement of the materials in the absence of an external catalyst. Due to their dynamic ester and H bonds, the vitrimers exhibit good self-healing, recyclability, and shape memory properties, making them promising candidates for use as repairable and recyclable adhesives.

植物油基玻璃体是创新的可再生聚合物，具有广阔的应用前景。然而，它们的应用受到其较差的机械性能和在其制备中需要使用催化剂的限制。在本研究中，可再生桐油经过甲基酯化反应、Diels-Alder 反应和环氧化反应得到具有末端环氧基团的 TOTGE。TOTGE 用柠檬酸 (CA) 固化以获得无催化剂、自修复、高机械强度的全生物基 TOTGE-CA 玻璃体。由于其末端环氧基团的高反应性，玻璃体网络具有高密度的交联，因此表现出良好的热稳定性和机械性能。固化剂 CA 将大量羟基 (-OH) 基团引入玻璃体中，并形成丰富的氢 (H) 键。玻璃体中的 -OH 基团充当催化剂，在没有外部催化剂的情况下允许材料的拓扑网络重排。由于它们的动态酯键和 H 键，玻璃体显示出良好的自愈性、可回收性和形状记忆特性，使其成为可修复和可回收粘合剂的有希望的候选者。