Effect of functionalisation on polysulfone-based ultrafiltration membranes

被引：0
作者：
Raj S.A. [1 ]
Rajesh S. [1 ]
Lakshmi K. [1 ]
Shobana K.H. [1 ]
Mohan D. [1 ]
机构：
[1] Membrane Lab., Department of Chemical Engineering, Anna University Chennai, Chennai
来源：
International Journal of Nuclear Desalination | 2010年 / 4卷 / 01期
关键词：
Functionalisation; Polysulfone; Ultrafiltration;
D O I：
10.1504/IJND.2010.033763
中图分类号：
学科分类号：
摘要：
Polysulfone membranes possess excellent mechanical, biological and chemical stability but they suffer from fouling which leads to flux decline. Fouling can be minimised by functionalisation. In an attempt to overcome this limitation, the polysulfone was both sulphonated and carboxylated. The presence of sulphonic and carboxylic groups was confirmed through IR and NMR studies. Incorporation of sulphonic and carboxylic groups in the polymeric chain increases the hydrophilic nature of the membrane as well as the thermal stability, chemical tolerance, mechanical strength, etc. It was observed that the Pure Water Flux (PWF) value of CPSf was greater than that of SPSf and PSf. The actual angle of inclination of the two rings depends on the nature and number of substituent groups. In CPSf the angle of inclination of the two rings is higher than in SPSf. This results in the chains moving apart from each other in the case of CPSf, which could explain its higher flux.
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页码：18 / 27
页数：9
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共 12 条
  • [1] Bishop M.T., Karasz F.E., McKnight W.J., The sodium salts of sulfonated poly(aryl ether-ether ketone) (PEEK): Preparation and characterization, Polymer, 28, (1987)
  • [2] Brink L.E.S., Elbers S.J.G., Robertsen T., Both P.J., The anti-fouling action of polymers preadsorbed on ultrafiltration and macrofiltration membranes, Journal of Membrane Science, 76, (1993)
  • [3] Finar I.L., Organic Chemistry, 1, (1951)
  • [4] Finar I.L., Organic Chemistry, 2, (1959)
  • [5] Kalsi P.S., Organic Stereo Chemistry, (2007)
  • [6] Kim J.H., Kim C.K., Ultrafiltration membranes prepared from blends of polyethersulfone and poly(1-vinylpyrrolidone-co-styrene) copolymers, Journal of Membrane Science, 262, (2005)
  • [7] Ma X., Enhancing the antifouling property of polyethersulfone ultrafiltration membranes through surface adsorption-crosslinking of poly(vinyl alcohol), Journal of Membrane Science, 300, (2007)
  • [8] Osada N.I., Membrane Science &technology, Marcel Dekker, New York. Sarbolouuki, M.N. (1982) A general diagram for estimating pore size of UF and reverse osmosis membranes, Separation Science and Technology, 17, (1992)
  • [9] Sivakumar M., Studies on Ultrafiltration Membrane Based on Cellulose Acetate Polysulfone and Polyurethane Blends, (1997)
  • [10] Sivakumar M., Malaisamy R., Sajitha C.J., Mohan D., Mohan V., Rangarajan R., Preparation and performance of cellulose acetate polyurethane blend membranes and their applications, Journal of Membrane Science, 169, 2, (2000)
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