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Carbon Fiber/PLA Recycled Composite.

Salem Al Zahmi1,2, Saif Alhammadi1, Amged ElHassan3

  • 1Department of Chemical & Petroleum Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates.

Polymers
|June 10, 2022
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Summary

This study explores recycling carbon fiber (CF) and carbon-fiber-reinforced polymer (CFRP) waste to create reinforced Polylactic acid (PLA) composites. The research offers a sustainable solution for managing plastic and composite waste.

Keywords:
carbon fiber-reinforced polymer compositesmechanical treatmentpure carbon fibertensile strength

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Area of Science:

  • Materials Science
  • Polymer Science
  • Sustainable Engineering

Background:

  • Increasing demand for carbon fiber (CF) and carbon-fiber-reinforced polymers (CFRP) leads to significant waste generation.
  • Growing plastic waste from 3D printing, particularly Polylactic acid (PLA), necessitates effective recycling strategies.
  • Limited research exists on utilizing CF and CFRP waste to enhance recycled polymer properties.

Purpose of the Study:

  • To develop a recycled composite material by reinforcing waste Polylactic acid (PLA) with leftover carbon fiber (CF) and carbon-fiber-reinforced composite (CFRP) waste.
  • To investigate the feasibility of using two distinct waste streams (CF and CFRP) for composite production.
  • To evaluate the impact of recycled carbon fiber reinforcement on the mechanical and thermal properties of PLA.

Main Methods:

  • Two composite formulations were created by mixing waste PLA with either CF waste or CFRP waste.
  • Tensile testing was performed to assess the mechanical properties of the recycled composites.
  • Thermogravimetric analysis (TGA), X-ray diffraction (XRD), and Fourier-transformed infrared spectroscopy (FTIR) were used for thermal and structural characterization.

Main Results:

  • The incorporation of CF and CFRP waste into PLA significantly altered its mechanical and thermal properties.
  • Detailed analysis using TGA, XRD, and FTIR provided insights into the structural and thermal stability enhancements.
  • The study demonstrated the potential for creating value-added materials from composite waste streams.

Conclusions:

  • Recycled carbon fiber and CFRP waste can be effectively utilized to reinforce Polylactic acid (PLA), offering a sustainable recycling pathway.
  • The developed recycled composites show potential for applications requiring enhanced material properties.
  • This research contributes to waste management solutions in both the composites and 3D printing industries.