Preparation of PVA/Chitosan/Zeolite Composite and its Antibacterial Activity for Water Treatment

Abstract:

Zeolite filled polymer has recently emerged as a promising material with its immense applications. When taking water treatment into account, it is potentially an antibacterial film. In this study, poly vinyl alcohol (PVA)/chitosan/zeolite composite membranes were prepared with different proportions, including 5:1, 8:1 and 10:1 of PVA/chitosan ratios. Zeolite available in the film aimed to improve the morphology and the efficiency in water environment, with loading dosages of 10, 20 and 50 wt%, respectively. Characterization using scanning electron microscopy (SEM), SEM/EDX and X-ray diffraction (XRD) were also conducted to have a better view of the membranes. The results of antibacterial activity against aerobic bacteria using the 3M^TM Petrifilm^TM Aerobic Count (AC) Plate. The results indicated that pure chitosan film gave 75.7% of antibacterial activity and the composite film with 5:1 ratio of PVA/chitosan was the effective proportion, revealing the antibacterial rate around 53% to the applications of bacteria inhibition. The time test of antibacterial also reduced the level of bacteria in water environment to 2900 CFU of aerobic bacteria.

• Periodical: Advances in Science and Technology (Volume 122)
• Pages: 41-47
• DOI: https://doi.org/10.4028/p-7m1j4w
• Online since: January 2023
• Authors: Le Phuong Quynh*, Le Nhat Quang, Nguyen Kim Minh Tam, Long Quang Nguyen
• Keywords: Antibacterial Activity, Chitosan, Membrane, Petrifilm, PVA, Zeolite

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