Recent Advances in Tailored Fabrication and Properties of Biobased Self-Healing Polyurethane

Abstract

With the emergence of challenges in the environmental degradation and resource scarcity fields, the research of biobased self-healing polyurethane (BSPU) has become a prevailing trend in the technology of the polyurethane industry and a promising direction for developing biomass resources. Here, the production of BSPU from lignocellulose, vegetable oil, chitosan, collagen, and coumarin is classified, and the principles of designing polyurethane based on compelling examples using the latest methods and current research are summarized. Moreover, the impact of biomass materials on self-healing and mechanical properties, as well as the tailored performance method, are presented in detail. Finally, the applications of BSPU in biomedicine, sensors, coatings, etc. are also summarized, and the possible challenges and development prospects are explored to helpfully make progress in the development of BSPU. These findings demonstrate valuable references and practical significance for future BSPU research.

High Toughness, Multi-dynamic Self-Healing Polyurethane for Outstanding Energy Harvesting and Sensing

“…Polyurethane (PU) elastomer is also a hot topic in scientific research, especially in the field of intelligent materials such as the artificial electronic skin (e-skin) owing to its excellent mechanical properties, , aging resistance, , good compatibility, , and easy modification. , Inspired by the self-healing properties of biological tissues, PU is endowed with self-healing performance through hydrogen bonds, − disulfide bonds, , Diels–Alder bonds, , imine bonds, metal coordination bonds , , and arylhydrazone bonds, , or a combination of several of these bonds to address the damage issue caused during the use of TENG. Researchers have made certain research achievements on self-healing PU-based TENG.…”