Biocomposites Sembilang bamboo citric acid micro-size fibers physical mechanical properties polylactic acid polypropylene sisal Adhesive type Asam sitrat Attacus atlas Bombyx mori Cellulose Characteristics Composite Corn husk Hybrid particleboard Interface Papan laminasi Particle composition Poli asam laktat Pulp fibers Response Surface Methodology (RSM) Sengon veneer by-products activated carbon adhesive content bacteria bagas sorgum bamboo bambu andong bambu mayan calcite carbon carbon properties carbonization temperature carbonization time cement-carbon composites coconut coir fiber crack damage self-detection fibroin food container composite hybrid adhesive jabon laju kristalisasi lignocellulosic biomass limbah sengon mahogany sawdust mechanical properties mixture ratio