Efecto de la inclusión de policaprolactona en películas elaboradas a partir de almidón y ácido poliláctico
Resumen
El uso de materiales amigables con el ambiente se ha convertido en un tema de gran interés científico y comercial debido al impacto negativo que ocasionan los plásticos sintéticos de origen petroquímico por su inadecuada disposición final; en ese sentido, las mezclas de almidón termoplástico (TPS, por sus siglas en inglés) y ácido poliláctico (PLA, por sus siglas en inglés) han sido estudiadas en diversas aplicaciones. En la presente investigación se obtuvo una película flexible a partir de la mezcla de estos biopolímeros empleando el proceso de extrusión soplado donde fueron estudiadas sus propiedades mecánicas, de barrera al oxígeno y vapor de agua con el fin de compararlas frente a una película patrón que contuviera policaprolactona (PCL), buscando disminuir los costos del producto final manteniendo sus propiedades mecánicas y de barrera. Se pudo evidenciar que no existieron diferencias significativas entre mezclas de TPS/PLA con la mezcla de TPS/PLA/PCL obteniendo un material de alta barrera al oxígeno, con destacadas propiedades mecánicas frente a otros estudios pero con deficiente permeabilidad al vapor de agua frente a plásticos de origen sintético.
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Disciplinas:
AgroindustriaLenguajes:
es;enAgencias de apoyo:
Universidad del Cauca,Referencias bibliográficas
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