Relación estructura, propiedades y procesamiento del material compuesto biodegradable obtenido a partir de policaprolactona/almidón y fibras sisal

CYRAS, VIVIANA PAOLA

Revista SAM. Publicación de la Sociedad Argentina de Materiales

SAM

Lugar: Mar del Plata; Año: 2005 vol. 2 p. 18 - 30

1668-4788

The matrix used is a biodegradable commercial product called MaterBi-Z (PCL/starch) and the reinforcement was sisal fibers.  A kinetic model for the crystallization behavior was developing: the induction time of the crystallization and the crystallization rate was not influenced by the sisal fiber presence. Fiber content enhances the tensile properties of the biodegradable composite (modulus and tensile strength). An increase of rotation speed and/or a reduction of temperature produced fibers of smaller dimensions but with higher aspect ratio l/d.  The effect of chemical treatment performed with the fiber, was an increase of the elongation at break in composite. Biodegradation is faster than in liquid medium (abiotic hydrolytic degradation). This is due to the bacterium and fungus synergism.