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- Title
Microwave Crosslinked Chitosan/Green Fluorescent Carbon Nanoparticles Film: Comprehensive Characterisation and Antimicrobial Performance.
- Authors
Masbah, Mas Syazlin; Iqbal, Anwar; Ida, Junichi; Mydin, Rabiatul Basria S. M. N.; Noh, Nur Asshifa Md; Zainul, Rahadian; Hussin, M. Hazwan
- Abstract
Conventional crosslinkers used to reduce the swelling of chitosan films are prone to toxicity. Fluorescent carbon nanoparticles, on the other hand, present a safer alternative. This study aims to crosslink microwave-synthesised green fluorescent carbon nanoparticles (GFCNPs) with high quantum yield (44%) and chitosan film via solvent casting (CHT/GFCNPs). The particle size distribution of GFCNPs predominantly ranged from 5 nm to 15 nm. X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) analyses indicated the presence of graphite. Attenuated total reflectance-fourier transform infrared (ATR-FTIR) spectroscopy detected various functional groups that enabled crosslinking. The CHT/GFCNPs exhibited significantly lower swelling (500%) compared to chitosan film (2300%). Preliminary findings of antibacterial activity demonstrated the effects of the compounds on bacteria with different cell wall structures, namely Gram-positive and Gram-negative bacteria. The CHT/GFCNPs showed potential antibacterial activity against Staphylococcus aureus, a Grampositive bacteria, compared to Escherichia coli, a Gram-negative bacteria.
- Subjects
BACTERIAL cell walls; PARTICLE size distribution; CARBON films; GRAM-negative bacteria; TRANSMISSION electron microscopy
- Publication
Journal of Physical Science, 2024, Vol 35, Issue 2, p45
- ISSN
1675-3402
- Publication type
Article
- DOI
10.21315/jps2024.35.2.4