Effects of a silane coupling agent on the exfoliation of organoclay layers in polyurethane/organoclay nanocomposite foams?
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Mi Sun | - |
dc.contributor.author | Kim, Youn Hee | - |
dc.contributor.author | Han, Sung Jae | - |
dc.contributor.author | Choi, Seok Jin | - |
dc.contributor.author | Kim, Sang Bum | - |
dc.contributor.author | Kim, Woo Nyon | - |
dc.date.accessioned | 2021-09-09T03:40:03Z | - |
dc.date.available | 2021-09-09T03:40:03Z | - |
dc.date.created | 2021-06-10 | - |
dc.date.issued | 2008-10-05 | - |
dc.identifier.issn | 0021-8995 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/122570 | - |
dc.description.abstract | An attempt was made to synthesize polyurethane (PU)/organoclay nanocomposite foams with high thermal insulation properties. The organoclay was modified by polymeric 4,4'-diphenylmethane diisocyanate (PMDI) with a Silane Coupling agent. The structure of the organoclay-modified PMDI with the silane coupling agent was determined by Fourier transform infrared spectroscopy and nuclear magnetic resonance. Transmission electron micrographs and wide-angle X-ray diffraction patterns showed that the interlayer distance increased for the PU/organoclay nanocomposites with the addition of the silane coupling agent. It was expected that the distance between the organoclay layers Would increase and that the organoclay would be dispersed on a nanoscale in the PU matrix because of the organic/inorganic hybrid bond formation between the organoclay and silane coupling agent. Compressive and flexural strengths of the PU/silane coupling agent/organoclay nanocomposite foams were similar to those of the PU/organoclay nanocomposite foams. However, the thermal conductivity appreciably decreased from 0.0250 to 0.0230 W/m h degrees C in the PU/silane Coupling agent/organoclay nanocomposite foams. Scanning electron micrographs showed that the cell size of the PU/silane Coupling agent/clay nanocomposite foams also decreased. On the basis of these results, it is suggested that the smaller cell size and lower thermal conductivity of the PU/silane Coupling agent/organoclay nanocomposite foams were mainly due to enhanced exfoliation of the organoclay layers by the silane coupling reaction. (C) 2008 Wiley Periodicals, Inc. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | JOHN WILEY & SONS INC | - |
dc.subject | POLYURETHANE/CLAY NANOCOMPOSITES | - |
dc.subject | BLOWING AGENTS | - |
dc.subject | MORPHOLOGY | - |
dc.subject | SILICATE | - |
dc.subject | DEGRADATION | - |
dc.subject | ELASTOMER | - |
dc.subject | PENTANE | - |
dc.title | Effects of a silane coupling agent on the exfoliation of organoclay layers in polyurethane/organoclay nanocomposite foams? | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Youn Hee | - |
dc.contributor.affiliatedAuthor | Kim, Woo Nyon | - |
dc.identifier.doi | 10.1002/app.28521 | - |
dc.identifier.scopusid | 2-s2.0-54749122825 | - |
dc.identifier.wosid | 000258633800046 | - |
dc.identifier.bibliographicCitation | JOURNAL OF APPLIED POLYMER SCIENCE, v.110, no.1, pp.376 - 386 | - |
dc.relation.isPartOf | JOURNAL OF APPLIED POLYMER SCIENCE | - |
dc.citation.title | JOURNAL OF APPLIED POLYMER SCIENCE | - |
dc.citation.volume | 110 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 376 | - |
dc.citation.endPage | 386 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.subject.keywordPlus | POLYURETHANE/CLAY NANOCOMPOSITES | - |
dc.subject.keywordPlus | BLOWING AGENTS | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | SILICATE | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | ELASTOMER | - |
dc.subject.keywordPlus | PENTANE | - |
dc.subject.keywordAuthor | organoclay | - |
dc.subject.keywordAuthor | polyurethanes | - |
dc.subject.keywordAuthor | nanocomposites | - |
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