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Kwon, Young-Nam
Superior Membrane-based Advanced Research & Technology (SMART) Lab
Research Interests
  • Membrane, Reverse(Forward) osmosis, Membrane distillation, Hydrate-induced ice desalination

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Hypochlorite degradation of crosslinked polyamide membranes I. Changes in chemical/morphological properties

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Title
Hypochlorite degradation of crosslinked polyamide membranes I. Changes in chemical/morphological properties
Author
Kwon, Young-NamLeckie, James O.
Issue Date
2006-10
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MEMBRANE SCIENCE, v.283, no.1-2, pp.21 - 26
Abstract
When disinfecting or cleaning agents contact polymer-based membranes, hydrolysis and oxidation with the membrane change surface properties. The research reported here discusses the effect of exposure to solution of hypochloric acid (disinfecting agent) on the chemical and morphological properties of a crosslinked polyamide membrane (LFC1, Hydranautics (c)). Effects on the membrane were evaluated using AFM, XPS, FT-IR, contact angle, and streaming potential analysis. Chlorine incorporated in the membrane increased with increasing hypochlorite concentration and decreasing pH of a soaking bath. Exposed membranes were more hydrophilic and had a slightly more negative zeta potential. The chlorination broke and weakened hydrogen bonding by decreasing the number of hydrogen bonding sites. This study shows that the use of chlorine chemically changed the surface properties of the crosslinked polyamide LFC1 membrane, but there was no change in roughness and morphology.
URI
https://scholarworks.unist.ac.kr/handle/201301/6511
URL
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=33747769916
DOI
10.1016/j.memsci.2006.06.008
ISSN
0376-7388
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UEE_Journal Papers
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