Antibacterial activity of silver nanoflake (SNF)-blended polysulfone ultrafiltration membrane

Prihandana, Gunawan Setia and Sriani, Tutik and Muthi'ah, Aisyah Dewi and Musa, Siti Nurmaya and Jamaludin, Mohd Fadzil and Mahardika, Muslim (2022) Antibacterial activity of silver nanoflake (SNF)-blended polysulfone ultrafiltration membrane. Polymers, 14 (17). ISSN 2073-4360, DOI

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The aim of this research was to study the possibility of using silver nanoflakes (SNFs) as an antibacterial agent in polysulfone (PSF) membranes. SNFs at different concentrations (0.1, 0.2, 0.3 and 0.4 wt.%) were added to a PSF membrane dope solution. To investigate the effect of SNFs on membrane performance and properties, the water contact angle, protein separation, average pore size and molecular weight cutoffs were measured, and water flux and antibacterial tests were conducted. The antimicrobial activities of the SNFs were investigated using Escherichia coli taken from river water. The results showed that PSF membranes blended with 0.1 wt.% SNFs have contact angles of 55 degrees, which is less than that of the pristine PSF membrane (81 degrees), exhibiting the highest pure water flux. Molecular weight cutoff values of the blended membranes indicated that the presence of SNFs does not lead to enlargement of the membrane pore size. The rejection of protein (egg albumin) was improved with the addition of 0.1 wt.% SNFs. The SNFs showed antimicrobial activity against Escherichia coli, where the killing rate was dependent on the SNF concentration in the membranes. The identified bacterial colonies that appeared on the membranes decreased with increasing SNF concentration. PSF membranes blended with SNF, to a great degree, possess quality performance across several indicators, showing great potential to be employed as water filtration membranes.

Item Type: Article
Funders: Hibah SATU Joint Research Scheme, Airlangga University [1307/UN3.15/PT/2021]
Uncontrolled Keywords: Polysulfone membrane; Silver nanoflake; Good health; Antibacterial activity; Escherichia coli; Water treatment
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 19 Sep 2023 02:36
Last Modified: 19 Sep 2023 02:36

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