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Effect of Environmental Aging on Tensile Properties of Post-Consumer Recycled (PCR) Polycarbonates

In: Waste Material Recycling in the Circular Economy - Challenges and Developments

Author

Listed:
  • Rashed Adnan Islam
  • Syed Zameer
  • Jacki Laiz
  • David Chen
  • Anthony Yu
  • Ayyana Chakravartula

Abstract

In this chapter, tensile properties of different grades of post-consumer recycled (PCR) polycarbonate (PC) plastics have been compared with conventional or virgin PC before and after different aging conditions. 50 and 75% recycled PCs showed comparable yield strength (~57 MPa), maximum tensile strength (~70 MPa) and maximum strain (~190-200%) before aging, when compared to virgin PC of same melt flow rate (MFR of ~10 g/10 min). From the fractography analysis (optical and scanning electron microscopy) of the both virgin and 50% recycled PC, it is evident that the fracture morphologies are very similar and they are indicative of ductile failure. It is observed that with the presence of temperature and humidity (60°C 90% RH) aging, tensile strength starts to drop over time but most importantly both 50% and 75% PCR grades showed similar aging behavior compared to virgin PC (10-13% strength degradation after 500 hours of aging). Reliability modelling showed comparable B10, Weibull Alpha and Weibull Beta values between Virgin PC and PCR grades after different aging conditions. Fractography analysis of fresh and aged 75% PCR also showed ductile features.

Suggested Citation

  • Rashed Adnan Islam & Syed Zameer & Jacki Laiz & David Chen & Anthony Yu & Ayyana Chakravartula, 2022. "Effect of Environmental Aging on Tensile Properties of Post-Consumer Recycled (PCR) Polycarbonates," Chapters, in: Dimitris S. Achilias (ed.), Waste Material Recycling in the Circular Economy - Challenges and Developments, IntechOpen.
    • Handle: RePEc:ito:pchaps:237018
    DOI: 10.5772/intechopen.99528
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    More about this item

    Keywords

    Post Consumer Recycled; Tensile Strength; Melt Flow Rate; Elongation at Break; Weibull Analysis;
    All these keywords.

    JEL classification:

    • Q53 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Air Pollution; Water Pollution; Noise; Hazardous Waste; Solid Waste; Recycling

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