Tensile Testing of Starch-Based Bioplastic Films for Flexible Packaging Prototypes

Abstract

The authors produced starch-based bioplastic films with varying glycerol concentrations and evaluated their tensile behavior for low-load packaging applications. Using a benchtop tensile rig, they measured stress-strain response, elongation at break, and humidity sensitivity. One formulation improved elongation by 34% over the control while maintaining comparable tensile strength. The paper discusses trade-offs between flexibility and moisture resistance in student-manufactured biodegradable materials.