Tensile behavior analysis combined with digital image correlation and mechanical and thermal properties of microfibrillated cellulose fiber/ polylactic acid composites

Microfibrillated cellulose (MFC) employed as reinforcement of polymeric matrices can increase elastic modulus, stiffness and strength a composite. In this work, the assessment mechanical, thermal properties tensile tests assisted by digital image correlation (DIC) was performed for curaua fiber MFC-reinforced polylactic acid (PLA) composites function MCF content. First, MFC incorporated into PLA using solvent exchange technique subsequent polymer solubilization to produce master batch composites. Then, more added obtain with 0.5 1.5 wt% double screw extrusion injection molding. As result, addition caused flexural, tensile, indentation, impact modulus strengths compared those pure PLA. The deformation gradient obtained from DIC verified that MFC/PLA composite presented greater homogeneity in relation load dispersion, corroborating higher rigidity, maximum stress, Poisson's ratio.