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Antimicrobial effect of Waterborne polyurethane-based cellulose nanofibril/silver nanoparticles composites and Acacia concinna (Willd.) DC extract (shikakai)


Citation

Taung Mai, Lu Lu and San, H’ng Paik and Aung, Min Min and Uyama, Hiroshi and Mohamed, Ainun Zuriyati and Kamal Bahrin, Ezyana and Masarudin, Mas Jaffri and Mohamad Zulkifli, Azra Afrina and Chew, Tung Woey (2024) Antimicrobial effect of Waterborne polyurethane-based cellulose nanofibril/silver nanoparticles composites and Acacia concinna (Willd.) DC extract (shikakai). Polymers, 16 (19). art. no. 2683. pp. 1-13. ISSN 2073-4360

Abstract

Antimicrobial coatings are becoming increasingly popular in functional material modification and are essential in addressing microbial infection challenges. In this study, the phytochemical and antimicrobial potential of aqueous, 80% methanol and 80% ethanol pod extracts of Acacia concinna (Willd.) DC (AC) and its application in the green in situ (one pot) synthesis of silver nanoparticles on Cellulose nano fibrils (CNF) and Waterborne polyurethane (WPU) were prepared. The phytochemical evaluation of Acacia concinna crude extracts showed the presence of alkaloids, flavonoids, phenols, tannins, terpenoids, saponins, steroids. The surface plasmon Resonance peak of CNF/AC-AgNPs was 450 nm and the FTIR result confirmed functional groups such as carbonyl, phenols and carboxyl were present which was important for the bio-reduction of silver nanoparticles. The crude AC aqueous pods extract against Gram-positive and Gram-negative bacteria compared with AC ethanol and AC methanol extracts. The WPU/CNF/AC-AgNPs composite dispersion was also good in terms of its antibacterial activities. The WPU/CNF/AC-AgNPs nanocomposites could be applied as bifunctional nanofillers as an antimicrobial agent in food packaging systems and other biological applications.


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Official URL or Download Paper: https://www.mdpi.com/2073-4360/16/19/2683

Additional Metadata

Item Type: Article
Divisions: Faculty of Biotechnology and Biomolecular Sciences
Faculty of Food Science and Technology
Faculty of Forestry
Institute of Tropical Forestry and Forest Products
DOI Number: https://doi.org/10.3390/polym16192683
Publisher: Multidisciplinary Digital Publishing Institute
Keywords: Acacia concinna (Willd.) DC (AC); Cellulose nano fibrils (CNFs); Silver nanoparticles (AgNPs); Waterborne polyurethane (WPU)
Depositing User: Ms. Nur Faseha Mohd Kadim
Date Deposited: 09 Jul 2025 07:14
Last Modified: 09 Jul 2025 07:14
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/polym16192683
URI: http://psasir.upm.edu.my/id/eprint/118409
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