Abstract

VILLADA-CASTILLO, Héctor Samuel; NAVIA-PORRAS, Diana Paola  and  MOSQUERA-SANCHEZ, Silvio Andrés. Effect of Drying Time, Plasticizer Concentration and Particle Size on the Rupture Force of Semi-Rigid Materials Based on Thermoplastic Cassava Flour. Ing. Univ. [online]. 2011, vol.15, n.2, pp.385-401. ISSN 0123-2126.

This article assesses semi-rigid biopolymers in terms of their tensile strength. Traction or tension tests were carried out to determine the maximum rupture force of materials made from native cassava flour (MCOL 2261), carboxymethyl cellulose and sorbitol. The experimental conditions were: sorbitol concentrations at 10, 15, 20 and 25%, drying times of 28,800, 50,400, 72,000 and 93,600 seconds at 40°C, and particle size of native cassava flour of 250, 425 and 600 µm; The samples with 15% sorbitol, bigger particle size and longer drying time showed greater force at the breaking generated by tensile stress.

Keywords : Biopolymers; plant polymers; cassava-processing.

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