Recovery of Particle Reinforced Composite 3D Printing Filament from Recycled Industrial Polypropylene and Glass Fibre Waste

Extended Abstract The use of fibre-reinforced polymer composites has increased in recent years across various industries, such as aircraft, energy, sports, infrastructure, medical, defence, electronics, and automobile industries [1]. In particular, carbon fibre reinforced polymers (CFRP) and glass fibre reinforced polymers (GFRP) [1, 2] regularly demonstrate favourable strength-to-weight ratios at multiple size scales. Until recently, these materials have been readily adopted without complete consideration of the environmental impacts of the entire life cycle of the product- from raw material extraction, production, use and end-of-life outcome. In addition, composite waste occurs during production processes. Thus, finding efficient, commercially viable and effective reuse, remanufacturing and recycling routes is now of crucial importance to ensure sustainable continued use of composites. In addition, it is imperative that every effort be made to reduce the amount of waste material that is either