The effect of blend ratio on the properties of nanohalloysite filled of carboxymethyl cellulose/nanohalloysite/polylactic acid biocomposite film

Abstract

The objectives of this study were to determine the effect of nanohalloysite loadings in CMC/HNT biocomposites films and to investigate the effect of blend ratios on the properties of CMC/PLA/HNT biocomposite films. Materials used for this study were Carboxymethyl Cellulose (CMC), Polylactic Acid (PLA), and Halloysite Nanotube (HNTs). Among the test carried out were tensile testing, Scanning Electron Microscopy (SEM), and Moisture Content. Highest tensile strength was observed at 10wt% HNTs content. It is the optimum HNTs filler for the combining of CMC/PLA/HNTs nanobiocomposites films. Modulus of elasticity and elongation at break increased as the HNTs content is increased. Addition of 10 wt% HNTs gave more rough fracture tensile surface as compared to other samples. Tensile properties of CMC/PLA biocomposite films decreased and no significant changes was observed in break elongation. The modulus elasticity increased with decreasing of CMC content. Morphology of blend ratio 80/20 showed smooth tensile fractured surface than 60/40 of CMC/PLA film and 80/20 with addition of HNTs has more uniform tensile fractured surface than 60/40 of CMC/PLA/HNTs film. The moisture content decreased with increasing of HNT and PLA content. In overall, 10wt% is the optimum HNTs content and 80/20 is the best blend ratio CMC/PLA/HNT biocomposite films.