Colorless and Transparent Copolyimides and Their Nanocomposites: Thermo-Optical Properties, Morphologies, and Gas Permeabilities
DC Field | Value | Language |
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dc.contributor.author | Shin, Hyeon Il | - |
dc.contributor.author | Kwark, Young-Je | - |
dc.contributor.author | Chang, Jin-Hae | - |
dc.date.accessioned | 2024-02-27T16:31:33Z | - |
dc.date.available | 2024-02-27T16:31:33Z | - |
dc.date.issued | 2019-04 | - |
dc.identifier.issn | 2073-4360 | - |
dc.identifier.issn | 2073-4360 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/28205 | - |
dc.description.abstract | A series of linear aromatic copolyimides (Co-PIs) were synthesized by reacting 4,4-biphthalic anhydride (BPA) with various molar contents of 2,2-bis(trifluoromethyl)benzidine (TFB) and p-xylylenediamine (p-XDA) in N,N-dimethylacetamide (DMAc). Co-PI films were fabricated by solution casting and thermal imidization with poly(amic acid) (PAA) on glass plates. The thermo-optical properties and gas permeabilities of Co-PI films composed of various molar ratios of p-XDA (0.2-1.0 relative to BPA) were investigated. Thermal properties were observed to deteriorate with increasing p-XDA concentration. However, oxygen-transmission rates (O(2)TRs) and optical transparencies improved with increasing p-XDA concentration. Co-PI hybrids with a 1:0.2:0.8 molar ratio of BPA:TFB:p-XDA and organically modified hectorite (STN) were prepared by the in situ intercalation method. The morphologies and the thermo-optical and gas permeation properties of the hybrids were examined as functions of STN loading (5-50 wt %). XRD and TEM revealed substantial increases in clay particle agglomeration in the Co-PI hybrid films as the clay loading was increased from 5 to 50 wt %. The coefficient of thermal expansion (CTE) and the O2TR of a Co-PI hybrid film were observed to improve with increasing STN concentration; however, its optical transparency decreased gradually with increasing STN concentration. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | MDPI | - |
dc.title | Colorless and Transparent Copolyimides and Their Nanocomposites: Thermo-Optical Properties, Morphologies, and Gas Permeabilities | - |
dc.type | Article | - |
dc.publisher.location | 스위스 | - |
dc.identifier.doi | 10.3390/polym11040585 | - |
dc.identifier.wosid | 000467312900014 | - |
dc.identifier.bibliographicCitation | POLYMERS, v.11, no.4 | - |
dc.citation.title | POLYMERS | - |
dc.citation.volume | 11 | - |
dc.citation.number | 4 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.subject.keywordPlus | SOLUBLE POLYIMIDES | - |
dc.subject.keywordPlus | BARRIER PROPERTIES | - |
dc.subject.keywordPlus | FILMS | - |
dc.subject.keywordPlus | DIANHYDRIDE | - |
dc.subject.keywordPlus | BPDA | - |
dc.subject.keywordPlus | ODPA | - |
dc.subject.keywordAuthor | colorless and transparent copolyimide | - |
dc.subject.keywordAuthor | organoclay | - |
dc.subject.keywordAuthor | nanocomposite | - |
dc.subject.keywordAuthor | film | - |
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