(Instituto de Tecnologia, 2018) CRUZ, Isabela Cristina Rodrigues da; Edinaldo José de Sousa Cunha
Starch has gained increasing interest as a biodegradable plastic due to its abundance, renewability, and low cost. Different types of starch grains form thermoplastics with varied physico-mechanical properties. This study analyzes the influence of different starch grains (rice, manioc, and corn) in biofilm production. Films were prepared by plasticization with glycerol in an aqueous medium at 100°C for 30 minutes and characterized by physical-chemical analysis, scanning electron microscopy (SEM), X-ray diffraction (XRD), optical microscopy, thermal analysis (TG/DTG), and mechanical tests. The results show that the geometry of the grains and the amylose/amylopectin ratio influence biofilm properties, affecting solubility, gelatinization time, and mechanical stability after radiation exposure.
