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Article: Effect of membrane chemistry and coating layer on physiochemical properties of thin film composite polyamide RO and NF membranes. I. FTIR and XPS characterization of polyamide and coating layer chemistry

TitleEffect of membrane chemistry and coating layer on physiochemical properties of thin film composite polyamide RO and NF membranes. I. FTIR and XPS characterization of polyamide and coating layer chemistry
Authors
KeywordsCoating
Membrane
Nanofiltration
Polyamide
Reverse Osmosis
Issue Date2009
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/desal
Citation
Desalination, 2009, v. 242 n. 1-3, p. 149-167 How to Cite?
AbstractThe physiochemical properties of reserve osmosis (RO) and nanofiltration (NF) polyamide (PA) membranes are largely determined by their PA chemistry and coatings, if any. Knowledge on such inherent relationship is critically needed in advancing membrane technology. This paper presents a consistent and in-depth characterization on diagnosing the chemistry of polyamide and the presence of any coating or modifying agent. Fourier-transform infrared (FTIR) and x-ray photoelectron spectra (XPS) of 17 commonly used commercial thin film composite polyamide RO and NF membranes are presented. The FTIR spectra for fully aromatic trimesoyl chloride and 1,3-benzenediamine based membranes had an amide II band (1541 cm-1) and an aromatic amide band (1609 cm-1) that were absent for the semi-aromatic membranes. Consistent with that, the XPS binding energy shift for carbon atoms in fully aromatic amide groups was higher than that for semi-aromatic ones likely due to the more electron withdrawing environment. An additional intermediate peak with a binding energy shift of 1.1-1.6 eV was present in the XPS spectra of C(1s) for some commercial RO and NF membranes. The additional peak, coupled with FITR analysis over the high wave number region and XPS elemental analysis, provided consistent evidence that these membranes were either coated with an additional coating layer or had a modified PA chemistry. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/185383
ISSN
2015 Impact Factor: 4.412
2015 SCImago Journal Rankings: 1.549
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorTang, CYen_US
dc.contributor.authorKwon, YNen_US
dc.contributor.authorLeckie, JOen_US
dc.date.accessioned2013-07-30T07:32:04Z-
dc.date.available2013-07-30T07:32:04Z-
dc.date.issued2009en_US
dc.identifier.citationDesalination, 2009, v. 242 n. 1-3, p. 149-167en_US
dc.identifier.issn0011-9164en_US
dc.identifier.urihttp://hdl.handle.net/10722/185383-
dc.description.abstractThe physiochemical properties of reserve osmosis (RO) and nanofiltration (NF) polyamide (PA) membranes are largely determined by their PA chemistry and coatings, if any. Knowledge on such inherent relationship is critically needed in advancing membrane technology. This paper presents a consistent and in-depth characterization on diagnosing the chemistry of polyamide and the presence of any coating or modifying agent. Fourier-transform infrared (FTIR) and x-ray photoelectron spectra (XPS) of 17 commonly used commercial thin film composite polyamide RO and NF membranes are presented. The FTIR spectra for fully aromatic trimesoyl chloride and 1,3-benzenediamine based membranes had an amide II band (1541 cm-1) and an aromatic amide band (1609 cm-1) that were absent for the semi-aromatic membranes. Consistent with that, the XPS binding energy shift for carbon atoms in fully aromatic amide groups was higher than that for semi-aromatic ones likely due to the more electron withdrawing environment. An additional intermediate peak with a binding energy shift of 1.1-1.6 eV was present in the XPS spectra of C(1s) for some commercial RO and NF membranes. The additional peak, coupled with FITR analysis over the high wave number region and XPS elemental analysis, provided consistent evidence that these membranes were either coated with an additional coating layer or had a modified PA chemistry. © 2008 Elsevier B.V. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/desalen_US
dc.relation.ispartofDesalinationen_US
dc.subjectCoatingen_US
dc.subjectMembraneen_US
dc.subjectNanofiltrationen_US
dc.subjectPolyamideen_US
dc.subjectReverse Osmosisen_US
dc.titleEffect of membrane chemistry and coating layer on physiochemical properties of thin film composite polyamide RO and NF membranes. I. FTIR and XPS characterization of polyamide and coating layer chemistryen_US
dc.typeArticleen_US
dc.identifier.emailTang, CY: tangc@hku.hken_US
dc.identifier.authorityTang, CY=rp01765en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.desal.2008.04.003en_US
dc.identifier.scopuseid_2-s2.0-64649091264en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-64649091264&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume242en_US
dc.identifier.issue1-3en_US
dc.identifier.spage149en_US
dc.identifier.epage167en_US
dc.identifier.isiWOS:000266152500013-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridTang, CY=35489259800en_US
dc.identifier.scopusauthoridKwon, YN=14123466400en_US
dc.identifier.scopusauthoridLeckie, JO=7006717360en_US

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