Characterization of Hybrid FRP Composite Produced from Recycled PET and CFRP

Ghdayra Almahri, Kaouthar Madi, Fatima Alkaabi, Yahia Badran, Khaled Shehadeh, Amged ElHassan, Waleed Ahmed, Salem Alzahmi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In recent years, carbon fiber has experienced a significant surge in popularity attributed to its exceptional properties, including its high-temperature resistance, mechanical strength, and cost-effectiveness. Many industries have been attracted to the prevalent use of carbon-fiber-reinforced polymers or plastics (CFRP). However, the increasing demand for carbon fiber has created a waste recycling problem that needs to be addressed. This research aimed to develop a recycled composite using PET waste as a solution to the growing demand for both materials. The recycled carbon fibers were processed chemically and mechanically to generate power for this process. Various samples were tested with different proportions of CF (10%, 20%, 30%, and 40%) to analyze their mechanical properties. The recycled composites are examined under tensile test conditions to further explore the waste carbon reinforcement’s effect on polymers’ characteristics. Scanning electron microscopy was also utilized for mechanical morphology evaluations. After analyzing the data, it was found that samples containing 20% CF had the highest elastic modulus value among all the mixes. This is attributed to the reinforcing effect of the fibers. The Elasticity Modulus of the filaments increased with the concentration of CF, reaching its peak at 20% before decreasing. This trend is also apparent in the visual representations. When compared to recycling, the Elasticity Modulus value of 20% CF filament increased by 97.5%. The precise value for CF with a 20% filament is 4719.3 MPa. Moreover, the composite samples were analyzed using SEM to characterize them, and it was discovered that the incorporation of 20% CF/PET filler produced the composition with the highest strength.

Original languageEnglish
Article number2946
Issue number13
Publication statusPublished - Jul 2023


  • CFRP
  • PET
  • composite
  • properties
  • recycling

ASJC Scopus subject areas

  • General Chemistry
  • Polymers and Plastics


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