Alkali-Processed Flax Natural Made High-Density Polyethylene Waste Recycled Composites: Performance Evaluation

Natural and biodegradable fiber blended polymer-based composites are the best choice for lightweight and high-strength applications. The environmentally polluting plastic wastes, specifically high-density polyethylene (HDPE), are utilized and recycled for polymer composite fabrication. In this investigation, environment-polluting waste HDPE (high-density polypropylene) based polymer composites are fabricated with flax natural fiber treated with an alkali solution with 10% concentration. The injection mold fabricated waste HDPE/flax natural fiber (0, 10, 20, and 30 wt%) moisture absorption resistance percentage, tensile strength, and microhardness is evaluated by ASTM standards. The impact of alkali-processed flax natural fiber provided better moisture absorption resistance percentage, higher tensile strength, and good hardness is noted. Its values are 51%, 54 MPa, and 39 HV, which are noted by the higher content of flax natural fiber. This composite is suggested for sports applications.