Fundamental understanding of polylactic acid - lignocellulose composites

Biocomposites are biodegradable composites containing a polymer matrix and a natural reinforcing component. They are either directly extracted from nature or derived from it. As such, they can be sustainably produced (minimising the need for oil-based polymers) and safely discarded though biodegradation in compost or other natural environments. However, their difficulty becomes a balance between maximising the biocomposite physical performance and working life without drastically compromising its biodegradation. This holistic study investigated the complex compositional effects of biocomposites containing polylactic acid with varying weight loadings of natural fibres (such as wood fibres and cotton linters; some with surface treatments to improve the fibre-polymer interface) and the effect on both physical performance of the composite as well as the ultimate biodegradation in a compost environment.