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Cross-Linked Poly(methyl methacrylate) Nanocomposites' Synthesis, Characterization, and Antibacterial Effects.

Nazeeha S Alkayal1, Mashail A Al Ghamdi2

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Summary

New polymer nanocomposites containing copper oxide nanoparticles (CuO NPs) and activated carbon (AC) show enhanced antibacterial activity against E. coli and S. aureus.

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Polymer networks are crucial in various applications.
  • Developing novel materials with enhanced properties is an ongoing research area.
  • Antibacterial materials are in high demand for medical and industrial uses.

Purpose of the Study:

  • To synthesize novel polymer nanocomposites based on polymethyl methacrylate (PMMA) and melamine.
  • To investigate the effect of copper oxide nanoparticles (CuO NPs) and activated carbon (AC) as fillers.
  • To evaluate the antibacterial efficacy of the developed nanocomposites against E. coli and S. aureus.

Main Methods:

  • Polymer network synthesis via condensation between PMMA and melamine.
  • Incorporation of CuO NPs and AC as fillers.
  • Characterization using X-ray Diffraction (XRD), Energy-Dispersive X-ray spectroscopy (EDX), and thermal analysis.
  • Antibacterial activity testing using inhibition zone measurements.

Main Results:

  • Successful incorporation of CuO NPs and AC into the PMMA/Mel polymer matrix confirmed by XRD and EDX.
  • Significantly enhanced thermal stability of the PMMA/Mel polymer upon addition of CuO NPs.
  • PMMA/Mel-CuO and PMMA/Mel-AC nanocomposites exhibited greater antibacterial activity than the base PMMA/Mel polymer.
  • High activity against S. aureus observed for PMMA/Mel-CuO (22.6 mm inhibition zone) and PMMA/Mel-AC (11.3 mm inhibition zone).

Conclusions:

  • The synthesized PMMA/Mel-based nanocomposites demonstrate promising antibacterial properties.
  • CuO NPs and AC are effective fillers for enhancing the antibacterial efficacy of polymer networks.
  • Nanoparticle size plays a crucial role in bacterial cell disruption and killing.