Recycled PET particle effects on mechanical and dynamic properties of GFRP composites


Bulut M., Ertürk L., Demir A.

Emerging Materials Research, cilt.14, sa.4, ss.361-371, 2025 (SCI-Expanded, Scopus)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 14 Sayı: 4
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1680/jemmr.25.00030
  • Dergi Adı: Emerging Materials Research
  • Derginin Tarandığı İndeksler: Scopus, Science Citation Index Expanded (SCI-EXPANDED)
  • Sayfa Sayıları: ss.361-371
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

Polymer composites are widely used for their lightweight, formability, and cost-effectiveness. Recycling polyethylene terephthalate (PETs) waste into composites presents an eco-friendly solution to mitigate environmental harm. This study investigates the influence of recycled PET bottle particle filler on the mechanical and dynamic properties of glass-fiber reinforced epoxy composites. PET particles were incorporated into the epoxy matrix at 2%, 4%, and 8% weight ratios. Tensile tests revealed that 4% PETs filler increased tensile strength by 20.91% and elastic modulus by 19% compared to unmodified composites. Dynamic analysis demonstrated a 9.38% rise in natural frequency and a 25% enhancement in damping ratio with 4 wt.% of PETs incorporation. However, excessive loading of PETs (8 wt.%) caused agglomeration, reducing mechanical performance. These findings highlight the potential of recycled PETs as a sustainable filler to improve composite properties while addressing waste management challenges.