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Article: Microbial degradation of polymeric coatings measured by electrochemical impedance spectroscopy

TitleMicrobial degradation of polymeric coatings measured by electrochemical impedance spectroscopy
Authors
Issue Date1998
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0923-9820
Citation
Biodegradation, 1998, v. 9 n. 1, p. 39-45 How to Cite?
AbstractThis paper reports results of biodegradation studies of polyimide coatings exposed to a mixed fungal culture using electrochemical impedance spectroscopy (EIS). The fungal consortium was originally isolated from degraded polyimides and identified species include Aspergillus versicolor, Cladosporium cladosporioides, and a Chaetomium species. Actively growing fungi on polyimides yield distinctive EIS spectra through time, indicative of failure of the polymer integrity compared to the uninoculated controls. An initial decline in coating resistance was related to the partial ingress of water molecules and ionic species into the polymeric matrices. This was followed by further degradation of the polymers by activity of the fungi. The relationship between the changes in impedance spectra and microbial degradation of the coatings was further supported by scanning electron microscopy, showing extensive colonization of the polyimide surfaces by the fungi. Our data indicate that EIS can be a sensitive and informative technique for evaluating the biosusceptibility of polymers and coatings.
Persistent Identifierhttp://hdl.handle.net/10722/178616
ISSN
2015 Impact Factor: 2.208
2015 SCImago Journal Rankings: 0.907
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorGu, JDen_US
dc.contributor.authorMitton, DBen_US
dc.contributor.authorFord, TEen_US
dc.contributor.authorMitchell, Ren_US
dc.date.accessioned2012-12-19T09:48:44Z-
dc.date.available2012-12-19T09:48:44Z-
dc.date.issued1998en_US
dc.identifier.citationBiodegradation, 1998, v. 9 n. 1, p. 39-45en_US
dc.identifier.issn0923-9820en_US
dc.identifier.urihttp://hdl.handle.net/10722/178616-
dc.description.abstractThis paper reports results of biodegradation studies of polyimide coatings exposed to a mixed fungal culture using electrochemical impedance spectroscopy (EIS). The fungal consortium was originally isolated from degraded polyimides and identified species include Aspergillus versicolor, Cladosporium cladosporioides, and a Chaetomium species. Actively growing fungi on polyimides yield distinctive EIS spectra through time, indicative of failure of the polymer integrity compared to the uninoculated controls. An initial decline in coating resistance was related to the partial ingress of water molecules and ionic species into the polymeric matrices. This was followed by further degradation of the polymers by activity of the fungi. The relationship between the changes in impedance spectra and microbial degradation of the coatings was further supported by scanning electron microscopy, showing extensive colonization of the polyimide surfaces by the fungi. Our data indicate that EIS can be a sensitive and informative technique for evaluating the biosusceptibility of polymers and coatings.en_US
dc.languageengen_US
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0923-9820en_US
dc.relation.ispartofBiodegradationen_US
dc.subject.meshAspergillus - Metabolismen_US
dc.subject.meshBiodegradation, Environmentalen_US
dc.subject.meshCladosporium - Metabolismen_US
dc.subject.meshElectric Impedanceen_US
dc.subject.meshElectrochemistry - Methodsen_US
dc.subject.meshFungi - Classification - Metabolismen_US
dc.subject.meshPolymers - Metabolismen_US
dc.subject.meshSensitivity And Specificityen_US
dc.subject.meshSpectrum Analysis - Methodsen_US
dc.titleMicrobial degradation of polymeric coatings measured by electrochemical impedance spectroscopyen_US
dc.typeArticleen_US
dc.identifier.emailGu, JD: jdgu@hkucc.hku.hken_US
dc.identifier.authorityGu, JD=rp00701en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1023/A:1008252301377en_US
dc.identifier.pmid9807803-
dc.identifier.scopuseid_2-s2.0-0031690235en_US
dc.identifier.hkuros44852-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0031690235&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume9en_US
dc.identifier.issue1en_US
dc.identifier.spage39en_US
dc.identifier.epage45en_US
dc.identifier.isiWOS:000076443600004-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridGu, JD=7403129601en_US
dc.identifier.scopusauthoridMitton, DB=7003830463en_US
dc.identifier.scopusauthoridFord, TE=26634948200en_US
dc.identifier.scopusauthoridMitchell, R=7403974570en_US

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