Determining the role of the method used to recycle polypropylene waste materials from automotive industry using sepiolite and zeolite fillers


In this work, the effectiveness of a rapid recycling method of waste polypropylene (WPP) with the addition of inorganic fillers was investigated. The experiments were performed using three types of WPP and a mixture of them (MWPP), characterized by different amount of talc content. The influence of sepiolite (micrometric size) and zeolite (nanometric size) fillers addition on newly prepared materials was analysed by X-ray diffraction analysis (XRD) and scanning electron microscopy (FE-SEM). Mechanical characterizations of all the filled compounds were also performed. The data indicate that the addition of low percentage (5%) of sepiolite or LTA zeolite improves some mechanical and rheological properties of WPP-recycled materials. However, the results also show that the simple mixing of wastes and additional fillers (without preparing pellets) has an influence on the recycling process.

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Correspondence to Claudia Belviso or Ambra Guarnaccio.

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Belviso, C., Montano, P., Lettino, A. et al. Determining the role of the method used to recycle polypropylene waste materials from automotive industry using sepiolite and zeolite fillers. J Mater Cycles Waste Manag (2021).

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  • Recycled polypropylene
  • Sepiolite
  • Zeolite
  • Filler
  • Mechanical and rheological properties