Influence of initial fiber length on the mechanical and tribological properties of hemp fiber reinforced plants-derived polyamide 1010 biomass composites

Abstract

The aim of this study is to investigate the influence of initial fiber length on the mechanical and tribological properties of hemp fiber filled plants-derived polyamide 1010 biomass composites in order to develop the new engineering materials such as structural materials and tribomaterials based on all plants-derived materials. Plants-derived polyamide 1010 (PA1010) was made from plants-derived castor oil. Hemp fiber (HF) was previously cut into length of 5mm, 10mm, 20mm and 50mm, and was surface-treated by two types of treatment: alkali treatment by NaOH solution and surface treatment by ureidosilane coupling agent (HF-S). The volume fraction of HF-S in the composites was fixed with 20vol.%. HF-S/PA1010 biomass composites were extruded by a twin screw extruder and injection-molded. Their mechanical properties such as tensile, bending, and Izod impact test, and tribological properties by ring-on-plate type sliding wear testing were evaluated. It was found that the mechanical properties of HF-S/PA1010 bio...