Abstract: PE-HD/nature fiber composites were prepared by a twin-screw extruder. Two kinds of recycled post-consumer nature fibers, ramie noil fiber and bamboo residue were used and compared. The effect of fiber contents and fiber types on the melt index, microstructure, and mechanical properties of the composite were studied. Both kinds of fibers could improve mechanical properties of the composite. Compared with bamboo residue, ramie noil fiber played a more effective role on the composites. When 20% ramie noil fiber was used, the tensile strength is increased by 21% and the flexural strength increased by 48%.

Key words: High-density polyethylene, ramie noil fiber, bamboo residue, composite, mechanical property