Review evaluates determinants of polypropylene recycling rates, highlighting collection efficiency, processing chemistry, and market demand for recyclates.
Polypropylene (PP) is a widely used plastic with consumer applications ranging from food packaging to automotive parts, including car battery casings. To differentiate it from other recyclable plastics, it is designated as #5. Here, the factors contributing to PP recycling rates are briefly reviewed. Considerations include collection and separation efficiency, processing chemistry, and market dynamics for the products derived from recyclates.
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M. Xanthos (2012) studied this question.