The application of poly(dimethyldiallylammonium chloride) in poly(butylene adipate‐co‐terephthalate)/starch composites

Abstract

Antimicrobial degradable materials are pivotal in enhancing food safety, mitigating plastic pollution, and advancing sustainable development. In this study, poly(diallyldimethylammonium chloride) (PDMDAAC) was initially anchored to the starch surface (PMS) and utilized as a filler. Subsequently, poly(butylene adipate‐co‐terephthalate) (PBAT)/PMS composites with antimicrobial properties were successfully prepared by melt blending. The results showed that the introduction of PMS filler can improve the mechanical and antimicrobial properties of PBAT. Compared with pure PBAT, the tensile strength and modulus of PBAT/10PMS composites were enhanced by 25% and 29%, respectively. In addition, the prepared PBAT/PMS composites exhibited excellent antimicrobial activity against Escherichia coli when the PMS filler content reached 10 wt% or even higher. Therefore, an antimicrobial biodegradable composite was successfully prepared using a facile blending method in this study.