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Membranes 2017, 7(4), 64; doi:10.3390/membranes7040064

Characterization and Antibiofouling Performance Investigation of Hydrophobic Silver Nanocomposite Membranes: A Comparative Study

Faculty of Civil, Water and Environmental Engineering, A.C., Shahid Beheshti University, Tehran 1658953571, Iran
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Received: 10 September 2017 / Revised: 26 October 2017 / Accepted: 7 November 2017 / Published: 12 November 2017
(This article belongs to the Special Issue Nanocomposite Membranes)
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Abstract

Biofouling is one of the drawbacks restricting the industrial applications of membranes. In this study, different thicknesses of silver nanoparticles with proper adhesion were deposited on poly(vinylidenefluoride) (PVDF) and polyethersulfone (PES) surfaces by physical vapor deposition (PVD). The crystalline and structural properties of modified and pure membranes were investigated by carrying out X-ray diffraction (XRD) and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR). Scanning electron microscope (SEM) and atomic force microscopy (AFM) analyses were employed to examine the surface morphology and the bacteria anti-adhesion property of the membranes. The morphology measurements confirmed that even though after silver grafting the surface became more hydrophobic, the homogeneity increased and the flux reduction decreased after coating. Moreover a comparison between PVDF and PES revealed that CFU (colony forming units) reduced 64.5% on PVDF surface and 31.1% on PES surface after modification. In conclusion, PVD improved the performance of the membrane antibiofouling, and it is more promising to be used for PVDF rather than PES. View Full-Text
Keywords: antibiofouling; poly(vinylidenefluoride) (PVDF); polyethersulfone (PES); silver nanoparticles; hydrophobicity antibiofouling; poly(vinylidenefluoride) (PVDF); polyethersulfone (PES); silver nanoparticles; hydrophobicity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Amouamouha, M.; Badalians Gholikandi, G. Characterization and Antibiofouling Performance Investigation of Hydrophobic Silver Nanocomposite Membranes: A Comparative Study. Membranes 2017, 7, 64.

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