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. https://resolver.caltech.edu/CaltechAUTHORS:20140203-154102965
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Abstract
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.
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| 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. | |||||||||
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| Subject Keywords: | dendrimers; hyperbranched polymers and macrocycles; membranes; nanostructured polymers | |||||||||
| Issue or Number: | 6 | |||||||||
| DOI: | 10.1002/app.39728 | |||||||||
| Record Number: | CaltechAUTHORS:20140203-154102965 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140203-154102965 | |||||||||
| 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 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 03 Feb 2014 23:59 | |||||||||
| Last Modified: | 10 Nov 2021 16:40 |
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