Hydrogen Bond-Enabled Bio-Based Random Copolymer/Carbon Nanotube Composites as Multifunctional Adhesives

In this study, we designed a methacrylate-functionalized soybean oil (MASO) UV-curable prepolymer via amination and esterification reaction, and a series of random copolymers based on multiple hydrogen bonds were developed by copolymerization of MASO with allyl urea via a solvent-free UV curing strategy. These random copolymers exhibited outstanding self-healing efficiency, recyclability, resistance to water and acid, thermal stability, and adhesion to different substrates such as wood, metal, rubber, glass, and PTFE. The random copolymers can be used as a repairing patch in wet and dry environments and demonstrated a wide range of applications. In addition, the random copolymers/carbon nanotube (CNT) composites showed conductivity in various environments combined with excellent repairability and weldability. This study provides a new avenue to prepare bio-based and multifunctional adhesives and is of great significance to promote the practical application of new bio-based adhesives.