Estudio de propiedades ópticas y permeabilidad de vapor de agua en películas producidas a partir de almidón termoplástico de yuca, ácido poliláctico y ε-policaprolactona

Abstract

In this work we studied the optical properties and water vapor permeability (WVP) in biodegradable packaging made from two varieties of cassava starch thermoplastic of native and hydrolyzed polylactic acid and polycaprolactone. The packing is obtained through an extrusion process, which is evaluated the aforementioned properties for 1, 8, 60 and 120 days. The PVA for 120 days was among 2.18 and 9.12 E-11 E-11 g / Pa * s * m. On the other hand, almost all the films retained their color issues with values of among 83.92 and 87.89 L, the parameter a * and b * were close to 0, resulting in films with a slight tendency to yellow. With respect to this gloss varied among 16.06 and 21, 98 GU during aging. This study found that aging significantly affects the optical properties and the WVP