Pasteurization-Triggered Heat-Resistant Enhancement of Packaging Films Derived from a Star-Shape Toughened Polylactide Stereocomplex.

ABSTRACT: A process for enhancing polylactide films' heat resistance, shape stability, and toughness has been developed. A star-shaped poly-(ε-caprolactone-b-d-lactide) (starPCL-b-PDLA) copolymer was synthesized by using a four-armed PCL macroinitiator. The material was blended with linear poly-(l-lactide) (l-PLLA) to form a specific amount of stereocomplex, which endows the material with improved heat resistance. The effect of blend composition on their thermal and heat-resistant properties, toughness, and dynamic mechanical properties was investigated. The melt viscosity was optimized for a blown-film process by the star-shaped polymer's unique rheology. A pouch form package was fabricated with the blends, whose thermal-resistant performance was assessed by in-package thermal

SUBMITTER: Buchatip S 

PROVIDER: S-EPMC12311665 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature