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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Bifunctional hydrogel coatings for water purification membranes: Improved fouling resistance and antimicrobial activity
Journal of Membrane Science, Volume 372, No. 1-2, Year 2011
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Description
Bifunctional hydrogel materials having both fouling resistance and antimicrobial activity were prepared by the photopolymerization of polyethylene glycol diacrylate (PEGDA) and a functional monomer containing ammonium salt (RNH3Cl) in the presence of a photoinitiator. Water was added to the prepolymerization mixture to increase the solubility of the RNH3Cl monomer and to control the cross-linking density of the UV-cured films. The water uptake and permeability of the resulting films were easily controlled by manipulating the composition ratio of the PEGDA and RNH3Cl monomers and by varying the water content in the prepolymerization mixture. Extremely high water uptake (up to 900%) and permeability (∼200Lμmm-2h-1atm-1 or above) values were observed for the films prepared by adding 80% (w/w) water into the prepolymerization mixtures of PEGDA and RNH3Cl (weight ratio=1:1 or 2:1). PSF UF membranes coated with these water-absorbing hydrogel materials showed excellent anti-fouling efficiency in cross-flow filtration tested using an oil-water emulsion or a bovine serum albumin (BSA) solution as the feed. Antimicrobial activity of the hydrogel materials was also demonstrated by a case study employing E. coli. © 2011 Elsevier B.V.
Authors & Co-Authors
La, Young Hye
United States, San Jose
Ibm Research - Almaden
McCloskey, Bryan D.
United States, Austin
The University of Texas at Austin
Sooriyakumaran, Ratnam
United States, San Jose
Ibm Research - Almaden
Vora, Ankit
United States, San Jose
Ibm Research - Almaden
Freeman, Benny D.
United States, Austin
The University of Texas at Austin
Nassar, Majed S.
Saudi Arabia, Riyadh
King Abdulaziz City for Science and Technology
Hedrick, James L.
United States, San Jose
Ibm Research - Almaden
Nelson, Alshakim
United States, San Jose
Ibm Research - Almaden
Allen, Robert
United States, San Jose
Ibm Research - Almaden
Statistics
Citations: 84
Authors: 9
Affiliations: 3
Identifiers
Doi:
10.1016/j.memsci.2011.02.005
ISSN:
03767388
Research Areas
Environmental
Study Design
Case Study
Study Approach
Qualitative