Improved wettability and adhesion of polylactic acid/chitosan coating for bio-based multilayer film development

- Surface tension between PLA/CS blend solution and PLA film modified by MDI.
- Better wettability between PLA/CS blend solution and PLA film by increasing MDI.
- Increased breaking strength by increasing MDI due to the increased H-bonding.
- Increased number of physical entanglements between PLA/CS coating and PLA film.
- Development of a suitable bio-based multilayer film for food packaging applications.