Researchers have developed a novel, sustainable, and safe adhesive material called polyhydroxyurethane (PHU) based on carbonated daidzein (DZ-BCC) and amines. This bio-based PHU displays promising properties as a high-performance adhesive. The material combines high mechanical strength, self-healing ability, and resistance to high temperatures. The self-healing properties allow for a significant restoration of tensile strength after exposure to high temperatures, making it an ideal material for bonding applications. The PHU-based adhesive also demonstrates excellent adhesion to wood and glass, with shear strengths of up to 6.4 MPa and 3.4 MPa, respectively. Additionally, the material is chemically recyclable and high reprocessable, making it a sustainable option. The researchers believe that these properties could expand the range of applications for sustainable high-performance adhesives, particularly in the wood and glass industries. This discovery has significant implications for the development of eco-friendly, high-performance adhesives.
Novel, ultra-durable, and self-repairing biopolyurethane adhesives for high-performance bonding at elevated temperatures
