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Cyclodextrin-Dendrimer Functionalized Polysulfone Membrane for the Removal of Humic Acid in Water

Malinga, Soraya P. and Arotiba, Omotayo A. and Krause, Rui W. M. and Mapolie, Selwyn F. and Diallo, Mamadou S. and Mamba, Bhekie B. (2013) Cyclodextrin-Dendrimer Functionalized Polysulfone Membrane for the Removal of Humic Acid in Water. Journal of Applied Polymer Science, 130 (6). pp. 4428-4439. ISSN 0021-8995. doi:10.1002/app.39728.

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Commercial polysulfone (PSf) membranes were crosslinked with a β-cyclodextrin-poly (propyleneimine) (β-CD-PPI) conjugate which had β-CD pendant arms using trimesoyl chloride (TMC) by interfacial polymerization. The morphology and physicochemical properties of the nanofiltration membranes were characterized using Fourier transform infrared/attenuated total reflectance (FT-IR/ATR) spectroscopy, scanning electron microscopy (SEM), atomic force microscopy (AFM), and cross-flow filtration system. Water-contact angle, water-intake capacity, and rejection capacities of the membranes were evaluated. The β-CD-G4 (generation 4)-PPI-PSf and β-CD-G3 (generation 3)-PPI-PSf membranes both exhibited high humic acid rejection of 72% as compared to the commercial PSf which exhibited 57%. The modified membranes were also more hydrophilic (36° to 41°) than PSf (76°). These results suggest that β-CD-PPI nanostructures are promising materials for the synthesis of membranes for the removal of humic acid from water.

Item Type:Article
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Diallo, Mamadou S.0000-0002-2571-1568
Additional Information:© 2013 Wiley Periodicals, Inc. Received 31 March 2013; accepted 2 July 2013; Published online 22 July 2013. The author (SM) is grateful to the University of Johannesburg New Generation Scholars (NGS) Programme for financial support.
Funding AgencyGrant Number
University of Johannesburg New Generation Scholars (NGS) ProgrammeUNSPECIFIED
Subject Keywords: dendrimers; hyperbranched polymers and macrocycles; membranes; nanostructured polymers
Issue or Number:6
Record Number:CaltechAUTHORS:20140203-154102965
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Official Citation:Malinga, S. P., Arotiba, O. A., Krause, R. W. M., Mapolie, S. F., Diallo, M. S. and Mamba, B. B. (2013), Cyclodextrin-dendrimer functionalized polysulfone membrane for the removal of humic acid in water. J. Appl. Polym. Sci., 130: 4428–4439. doi: 10.1002/app.39728
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43629
Deposited By: Ruth Sustaita
Deposited On:03 Feb 2014 23:59
Last Modified:10 Nov 2021 16:40

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