A robust strategy for thermoformable cellulosic composite bioplastics via hydrogen bond substitution

mild thermal processing at 150 °C under 20 MPa for 1 hour, demonstrating good thermoplastic processability across multiple cycles of thermoplastic processing and recovery molding. In addition, the cellulose composite bioplastic demonstrate approximately fivefold enhancements in both toughness and thermal conductivity compared to those of pristine EC. And they can be repeatedly reprogrammed into diverse shapes under mild processing conditions through thermoplasticity induced by hydrogen-bond disruption and reformation. These findings provide a promising pathway for the development of high-performance cellulosic composite bioplastics, offering a viable alternative to conventional petroleum-derived plastics.