Influence of amylopectin content and grain size distribution on physicochemical properties of cassava starch films: extrusion process.

SILVIA GOYANES; LUCÍA FAMÁ; PAULA GONZÁLEZ SELIGRA

Congreso; VII International Conference on Composite Materials; 2018

Thermoplastic films based on native cassava starch (TPS) and amylopectin rich cassava starch (AP) with, initially, nano and micro grain size distribution (TPS:AP = 100:0 (TPS), 75:25 (TPS-AP25) and 50:50 (TPS-AP50)) were developed by extrusion process. Mechanical properties indicated the AP with nanometer size acted as reinforcement in TPS-AP25, while in TPS-AP50 the higher amylopectin concentration led to lower tensile properties. TGA and XRD revealed a higher glycerol loss mass with the highest amount of AP used.