Effect of Attapulgite Clay on Biodegradability and Tensile Properties of Polyvinyl Alcohol/Corn Starch Blend Film

摘要

Polyvinyl alcohol (PVOH) with corn starch (CS) at 70/30 weight percent ratio were prepared by a solution easting method with the addition of attapulgite at a range of 0.0-1.0 grams. The aim of this study is to investigate the effect of attapulgite on biodegradability and tensile properties of PVOH/CS matrix. All the results were compared with the control sample (PVOH/CS). The presence of attapulgite had hindered the degradation process in enzymatic, soil, and compost burial. The water sorption content increased with increasing immersion time. The highest tensile strength and elongation at break were shown by the PVOH/CS with 0.2 g of attapulgite content.