06 Feb 2023 --- Researchers have developed a novel synthesis method branded “seasoning” that enhances the mechanical performance of commercially inactive poly(butylene succinate) (PBS) with a minimal amount of biomass-derived tartaric acid (TA) and citric acid (CA). Biodegradable and bio-based plastics are carbon-neutral and do not generate microplastics that can enter food systems. The cooking-inspired method transforms a weak bioplastic into a strong one through “seasoning” with a minimal dose of a sustainable additive, CA or TA, that pinch the chain ends at the molecular level in the amorphous region. The scientists assert the method is economical and feasible because it maintains the original processes. In addition, it facilitates and solves the trade-off relationship between mechanical strength, shelf life and the biodegradation rate of a bioplastic.
