Determination of the Tensile Properties and Biodegradability of Cornstarch-Based Biopolymers Plasticized with Sorbitol and Glycerol oleh M. M. Harussani, S. M. Sapuan, A. H. M. Firdaus, Yaser A. El-Badry, Enas E. Hussein, Zeinhom M. El-Bahy