Degradación térmica de nanocompuestos basados en PHB y arcillas: efecto del tratamiento y procesamiento

DAVID D'AMICO; ROMINA OLLIER; WALTER F. SCHROEDER; VIVIANA P. CYRAS; VERA ALVAREZ

Córdoba

Congreso; Congreso Internacional de Metalurgia y Materiales ? 16º SAM-CONAMET.; 2016

In this work, the influence of clay and clay modifiers on the thermal degradation of a biodegradable bacterial poly(3-hydroxybutyrate), PHB, was studied. We have analyzed combined reactions of cationic exchange, silylation and acid activation of bentonite (E-S-A-Bent) which was the best treatment of a previous work. The obtained results reveal that organic modifiers greatly enhance the degradation leading to a dramatic decrease in PHB molecular weight. A kinetic analysis based on the Coats and Redfern model was applied to the non-isothermal TGA data. The results demonstrate that the surfactants effectively have a catalytic effect on the PHB degradation.