INTEMA   05428
INSTITUTO DE INVESTIGACIONES EN CIENCIA Y TECNOLOGIA DE MATERIALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
53. Characterization of polylactic acid/etilvinilacetate/cellulose composites
Autor/es:
M. MINHAZ-UL HAQUE; MARIANO PRACELLA; VERA ALVAREZ; A. VÁZQUEZ
Lugar:
Gramado
Reunión:
Congreso; ISNAPOL 2010. 7th International Symposium on Natural Polymers and Composites.; 2010
Resumen:
In this work we have studied the effect of ethylene vinyl acetate (EVA) on the thermal and mechanical properties of polylactic acid (PLA). EVA copolymers, due to their important rubber and resin properties are used for various applications, such as packaging films, adhesives/paper coatings, wire and cable insulation, barrier sheets; nevertheless, the properties of EVA composites have been little studied. So that, we have also incorporated modified cellulose fibers (Cell) and have studied the final properties of ternary composites: PLA/ EVA/Cell. It was observed that tensile strength and Young’s modulus decreased as a function of EVA content whereas for elongation at break a perfect exponential growth correlation was found. A similar trend was besides found for composites. In addition, tensile modulus has a little increase with fibre content. The effects of EVA and cellulose on glass transition, melting and crystallization temperatures (Tg, Tm and Tc respectively) were also analyzed