Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/1326
Title: Hydroxypropyl methacrylate thin film coating on polyvinylidene fluoride hollow fiber membranes via initiated chemical vapor deposition
Authors: Subramaniam, M. N.
Goh, P. S.
Sevgili, E.
Karaman, M.
Lau, W. J.
Ismail, A. F.
Keywords: Membrane
Icvd
Thin Film Coating
Polymerisation
Pvdf Ultrafiltration Membrane
Surface Modification
Antifouling Properties
Performance
Acid
Pome
Decolourization
Permeability
Temperature
Fabrication
Issue Date: 2020
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Abstract: Thin films of hydroxypropyl methacrylate (HPMA) were grown on polyvinylidene fluoride (PVDF) hollow fiber membranes via initiated chemical vapor deposition (iCVD), utilising di-tert-butyl peroxide as radical initiator. This method was able to completely coat PVDF membranes, producing uniform deposition of hydrophilic HPMA of 50 nm and 100 nm thickness on the membrane surface. The deposition of HPMA layer has been evidenced from the microscopy images and Fourier transform infra-red spectra. The HPMA coated membranes exhibited significantly improved surface hydrophilicity as reflective from the reduction in water contact angle from 78.1 degrees to 23.6 degrees meanwhile the membrane surface roughness was reduced with the thin film coating. The separation performance of HPMA-PVDF membranes was evaluated in the treatment of in-house prepared synthetic aerobically-treated palm oil mill effluent (AT-POME), which consists of lignin and tannic acid (TA). 100HPMA-PVDF membranes exhibited improved membrane flux and rejection of 50.8L/m(2)h and 83.1%, respectively. Additionally, 100HPMA-PVDF membrane maintained stable high permeation and rejection properties after four filtration cycles, due to its greatly improved surface hydrophilicity and reduced surface roughness. The studies open possibilities for highly controlled surface modification of membranes using low temperature iCVD methods to tailor the membrane selective layer.
URI: https://doi.org/10.1016/j.eurpolymj.2019.109360
https://hdl.handle.net/20.500.13091/1326
ISSN: 0014-3057
1873-1945
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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