Comparative analysis of mechanical, thermal, and biodegradability properties of PLA and starch-based bioplastics

Abstract

This study provides an in-depth analysis of mechanical, thermal, and biodegradability characteristics of bioplastics: pure polylactic acid (PLA), starch-based bioplastics, and PLA-starch composites. Through tensile testing, elastic modulus evaluation, and thermal gravimetric analysis (TGA), alongside soil burial tests for biodegradability, this research aims to assess the performance and environmental impact of these materials. PLA demonstrated superior mechanical strength and thermal stability, whereas starch-based bioplastics exhibited higher biodegradability. PLA-starch composites offer a balanced approach, merging improved biodegradability with enhanced mechanical properties. This detailed evaluation aids in the informed selection of bioplastic materials for diverse applications.