Relationship between processing and properties of biodegradable compositesbased on PCL/starch matrix and sisal fibers

Biocomposites were produced using polycaprolactone and starch as matrix, an d sisal fibers as reinforcement. The matrix is a biodegradable commercial p roduct called MaterBi-Z, which is based on a polycaprolactone and starch sy stem. The relationship between processing conditions and properties is repo rted. An alkaline treatment was performed in order to improve the adhesion and the compatibility of the fiber with the matrix. The effect of the treat ment on the tensile properties and morphology was determined. Fiber content enhances the tensile properties of the biodegradable composite. The experi mentally observed tensile properties (modulus and tensile strength) of shor t sisal fiber reinforced MaterBi-Z matrix composites with different fiber l oading are compared with the existing theories of reinforcement. SEM photom icrographs of the fractured composite surfaces are also analyzed.