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Recycling of Polymer Components From Waste Face Masks for Asphalt Modification: A Mini Review
Summary
Polymer components recovered from waste face masks (a major source of plastic waste since the COVID-19 pandemic) were recycled and incorporated into new materials. The study supports developing circular recycling pathways for the large volume of disposable mask plastic that otherwise risks fragmenting into microplastics.
ABSTRACT The COVID‐19 pandemic greatly increased plastic waste through widespread personal protective equipment (PPE) use, creating a serious environmental challenge. Disposable face masks (FM), primarily composed of non‐biodegradable polypropylene, account for an estimated 86 million units discarded monthly, leading to significant environmental contamination. Improper disposal results in their accumulation in landfills and water systems, increasing microplastic pollution. Their polymeric composition makes incineration and landfilling unsustainable, highlighting the need for alternative recycling methods. Recent studies highlight the potential of waste face masks (WFM) in asphalt pavements, leveraging their polymeric properties to enhance bitumen. WFM modified bitumen improves rutting resistance, stiffness, high‐temperature performance, and thermal stability, and additionally enhances adhesion between aggregates and binder in asphalt mixtures. However, challenges such as reduced ductility, fatigue cracking, and low‐temperature flexibility require optimization of WFM dosage and the incorporation of additives. This review provides a comprehensive evaluation of existing research on WFM utilization in asphalt modification, highlighting both the potential benefits and associated challenges, as well as future perspectives. By addressing these challenges, WFM modified asphalt can emerge as a viable, eco‐friendly alternative that aligns with circular economy principles, offering a sustainable solution to plastic waste management while extending the lifespan and resilience of road infrastructure.