AUTHOR=Wang Bin , Xu Xin , Fang Youxin , Yan Shouxin , Cui Bo , Abd El-Aty A. M. 

TITLE=Effect of Different Ratios of Glycerol and Erythritol on Properties of Corn Starch-Based Films

JOURNAL=Frontiers in Nutrition

VOLUME=Volume 9 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2022.882682

DOI=10.3389/fnut.2022.882682

ISSN=2296-861X

ABSTRACT=The demand for bio-compatible plastic products has increased; hence, a suitable method for producing green composites is essential. This study prepared corn starch-based films using the solution casting method, and the physicochemical properties of the prepared films were investigated using a mixture of glycerol (GLY) and erythritol (ERY) at different ratios (4:0, 3:1, 2:2, 1:3, and 0:4) as plasticizing agents. The crystallinity, hydrophilicity, and thermal stability of corn starch-based films were analyzed using small-angle X-ray diffraction, an optical contact angle instrument, and a thermal stability analysis instrument. With the increase in GLY ratio, the thickness, water-solubility, water content, water vapor permeability, elongation at break, and V-shaped crystallization of the corn starch-based films increased. The tensile strength and the thermal stability decreased with increasing the GLY ratio. We developed a new plasticizer to improve the properties of starch films and provided a theoretical basis for the industrial production of corn starch-based films.