Title: Mechanical and antibacterial activity of biodegradable Na-CMC: PVA reinforced with Al₂O₃ nanoparticles

Authors: Hanaa Shuker Mahmood; Nadir Fadhil Habubi

Addresses: University of Baghdad College of Pure Science, Ibn Alhaitham, Baghdad, Hanaa, 10071, Iraq ' Department of Radiation and Sonar Technologies, Alnukhba University College, Baghdad, Nadir, 10013, Iraq

Abstract: Sodium carboxymethyl-cellulose/polyvinyl alcohol composite (Na-CMC/PVA) reinforced with Al₂O₃ NPs was prepared by solution casting. The Fourier-transform infrared spectroscopy (FTIR) illustrates the characteristic bands for both Na-CMC and PVA. Some bands disappeared in the composite sample due to interaction between the blended polymers. Additional bands appeared in the reinforced samples attributed to the characteristic of metal-oxide vibrations indicated on reinforcement of polymer chains. The field emission scanning electron microscopy (FE-SEM) shows that the Na-CMC: PVA composite looked rubber-like, while the nanocomposite samples appeared more restricted by the Al₂O₃ nanoparticles, which restrict the sample elasticity, increases in stress yield and Young's modulus. The reinforced copolymer showed good, effective antibacterial against pathogenic bacteria. The antibacterial activity of E. coli, is more significant than Staph. aureus and Pseudomonas aeruginosa bacteria, and enhanced with increasing the nanoparticles ratio. The results indicated that Na-CMC/PVA-Al₂O₃ NPs could be applied as an antibacterial agent.

Keywords: Na-CMC; sodium carboxymethyl-cellulose; PVA; polyvinyl alcohol composite; FTIR; Fourier-transform infrared spectroscopy; tensile; antibacterial.

DOI: 10.1504/IJNBM.2024.143829

International Journal of Nano and Biomaterials, 2024 Vol.10 No.4, pp.221 - 234

Received: 15 Aug 2023
Accepted: 20 Dec 2023
Published online: 09 Jan 2025 *

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