การศึกษาสมบัติของวัสดุคอมโพสิตจากเศษพอลิเอทิลีนความหนาแน่นต่ำ และเศษไผ่จากอุตสาหกรรมเฟอร์นิเจอร์ สำหรับผลิตกายอุปกรณ์เสริมข้อเท้า

Abstract

This research investigates the effects on the properties of composite materials made from recycled low-density polyethylene (rLDPE) and bamboo waste from the furniture industry, with the aim of fabricating ankle-foot orthosis (AFO) devices. The objective is to develop a prototype product derived from industrial waste materials. The experimental process began by shredding rLDPE using a blade mill, followed by mixing with bamboo powder at weight ratios of 10%, 20%, and 30% using a twin-screw extruder. The resulting material was molded into test specimens through injection molding. The results revealed that at the 90:10 ratio of rLDPE to bamboo powder, the Young’s modulus increased, while the ultimate tensile strength showed a decreasing trend. In addition, water absorption and melting point also decreased as the bamboo content increased. These findings suggest the potential use of bamboo waste from the furniture industry as a reinforcement material to develop strong and sustainable composites suitable for producing ankle-foot orthoses.