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Modification of Nafion (R) Using 3-mercaptopropyl Trimethoxysilane

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dc.contributor.authorLee, Hyejung-
dc.contributor.authorPark, Sung Bum-
dc.contributor.authorOh, Myung-Hoon-
dc.contributor.authorCoo, Kyungsik-
dc.contributor.authorPark, Yong-il-
dc.contributor.authorSuzuki, Satoshi-
dc.contributor.authorNagai, Masayuki-
dc.contributor.authorPrinz, Fritz B.-
dc.date.available2020-04-24T13:25:48Z-
dc.date.created2020-03-31-
dc.date.issued2010-04-
dc.identifier.issn0374-4884-
dc.identifier.urihttps://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/2783-
dc.description.abstractThe modification of a Nafion (R) membrane by incorporation of 3-mercaptopropyltrimethoxysilane (MPTS) is investigated through a simple sol-gel process to reduce the methanol crossover without sacrificing the proton conductivity. The MPTS monomers incorporated in the Nation (R) matrix are hydrolyzed, forming a silicate phase by polymerization. The thiols of MPTS are finally oxidized into a sulfonic acid form. Compared to Nation (R), the obtained modified membranes show significantly reduced solvent uptake with an accompanying low volume expansion ratio. A maximum 42% methanol crossover reduction is observed with improved proton conductivity. The proton conductivities of the obtained membranes increase from 8.0 x 10(-3) Scm(-1) to 1.9 x 10(-2) Scm(-1) at 70 degrees C with increasing MPTS amount from 0 to 1.96 wt%. The low methanol crossover and the high proton conductivity of the modified membranes are attributable to the MPTS-derived silicate phase blocking the ionic cluster pathway and to the simultaneous supply of a high sulfonic acid concentration to the Nation (R) matrix.-
dc.language영어-
dc.language.isoen-
dc.publisherKOREAN PHYSICAL SOC-
dc.subjectPROTON-EXCHANGE MEMBRANE-
dc.subjectCOMPOSITE MEMBRANES-
dc.subjectMONTMORILLONITE-
dc.subjectIONOMERS-
dc.subjectSILOXANE-
dc.titleModification of Nafion (R) Using 3-mercaptopropyl Trimethoxysilane-
dc.typeArticle-
dc.contributor.affiliatedAuthorOh, Myung-Hoon-
dc.contributor.affiliatedAuthorCoo, Kyungsik-
dc.contributor.affiliatedAuthorPark, Yong-il-
dc.identifier.doi10.3938/jkps.56.1215-
dc.identifier.scopusid2-s2.0-77954852849-
dc.identifier.wosid000276783000035-
dc.identifier.bibliographicCitationJOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.56, no.4, pp.1215 - 1222-
dc.citation.titleJOURNAL OF THE KOREAN PHYSICAL SOCIETY-
dc.citation.volume56-
dc.citation.number4-
dc.citation.startPage1215-
dc.citation.endPage1222-
dc.type.rimsART-
dc.type.docTypeArticle-
dc.identifier.kciidART001438687-
dc.description.journalClass1-
dc.subject.keywordPlusPROTON-EXCHANGE MEMBRANE-
dc.subject.keywordPlusCOMPOSITE MEMBRANES-
dc.subject.keywordPlusMONTMORILLONITE-
dc.subject.keywordPlusIONOMERS-
dc.subject.keywordPlusSILOXANE-
dc.subject.keywordAuthorProton-conducting membrane-
dc.subject.keywordAuthorNafion-
dc.subject.keywordAuthor3-mercaptopropyl trimethoxysilane-
dc.subject.keywordAuthorDirect methanol fuel cell-
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