Small-size jatropha seed biochar extracted from microwave pyrolysis: Optimization of its biocomposites mechanical properties by mixture design

Microwave pyrolysis of finely ground jatropha seed biochar was used as bio-filler to develop biocomposites. Effects influencing the mechanical properties biocomposites were investigated based on varied material ratio. Ratios by percentage weight determined D-optimal (custom) mixture design using Stat Ease “Design Expert”. The properties, such tensile strength, modulus elasticity, and microhardness, dependent variables (response). Bio-filler content optimised attain overall best for optimized biocomposite that showcased good microhardness ratio’s predicted mean values strength (9.53 MPa), elasticity (0.730 GPa), (20.4 HV) polylactic acid biofiller mixture; (7.92 (0.668 (18.7 acid, biofiller, poly(ethylene-alt-maleic anhydride) mixture. Models generated some degree noise error present; however, outcome through optimization step generally reliable predicting properties. Additional data gathered experimental testing replicates could improve reliability model.