DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ahn, W. | ko |
dc.contributor.author | Kim, C.Y. | ko |
dc.contributor.author | Kim, H. | ko |
dc.contributor.author | Kim, Sung Chul | ko |
dc.date.accessioned | 2008-04-17T08:12:17Z | - |
dc.date.available | 2008-04-17T08:12:17Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1992-05 | - |
dc.identifier.citation | MACROMOLECULES, v.25, no.19, pp.5002 - 5007 | - |
dc.identifier.issn | 0024-9297 | - |
dc.identifier.uri | http://hdl.handle.net/10203/3949 | - |
dc.description.abstract | The thermodynamic phase behavior of blends of a low molecular-weight liquid crystal (LC), 4-cyano-4'-n-heptylbiphenyl (7CB), and each of two amorphous polymers, poly(methyl methacrylate) (PMMA) and polystyrene (PS), was studied as a function of temperature or LC concentration. Phase diagrams for both the binary PMMA/7CB and PS/7CB blends were constructed from DSC and optical microscopic observations showing that 7CB was partially miscible in both PMMA and PS. The study revealed an important observation that there existed a polymer/isotropic LC two-phase state at a given composition besides the polymer/nematic LC two-phase state and the polymer/solid crystalline LC two-phase state. The polymer/isotropic LC two-phase morphology was clearly observed by the phase-contrast optical microscope in the temperature range between the homogeneous single-phase state and the polymer/nematic LC two-phase state, while DSC or cross-polarized light microscopy failed to detect the existence of the polymer/isotropic LC two-phase state. This was also confirmed by a light-scattering experiment. At a low ratio of LC in both the PMMA/7CB and PS/7CB blends, direct transformation between the homogeneous single-phase state and the polymer/nematic LC two-phase state was observed without going through the polymer/isotropic LC two-phase state. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | Amer Chemical Soc | - |
dc.subject | STATISTICAL THERMODYNAMICS | - |
dc.subject | RODLIKE PARTICLES | - |
dc.subject | LIGHT-SCATTERING | - |
dc.subject | FLEXIBLE POLYMERS | - |
dc.subject | COMPOSITE FILMS | - |
dc.subject | MIXTURES | - |
dc.subject | SYSTEMS | - |
dc.subject | POLYSTYRENE | - |
dc.subject | SEPARATION | - |
dc.subject | EQUILIBRIA | - |
dc.title | Phase behavior of polymer/liquid crystal blends | - |
dc.type | Article | - |
dc.identifier.wosid | A1992JP27500028 | - |
dc.identifier.scopusid | 2-s2.0-0026927920 | - |
dc.type.rims | ART | - |
dc.citation.volume | 25 | - |
dc.citation.issue | 19 | - |
dc.citation.beginningpage | 5002 | - |
dc.citation.endingpage | 5007 | - |
dc.citation.publicationname | MACROMOLECULES | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Kim, Sung Chul | - |
dc.contributor.nonIdAuthor | Ahn, W. | - |
dc.contributor.nonIdAuthor | Kim, C.Y. | - |
dc.contributor.nonIdAuthor | Kim, H. | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | STATISTICAL THERMODYNAMICS | - |
dc.subject.keywordPlus | RODLIKE PARTICLES | - |
dc.subject.keywordPlus | LIGHT-SCATTERING | - |
dc.subject.keywordPlus | FLEXIBLE POLYMERS | - |
dc.subject.keywordPlus | COMPOSITE FILMS | - |
dc.subject.keywordPlus | MIXTURES | - |
dc.subject.keywordPlus | SYSTEMS | - |
dc.subject.keywordPlus | POLYSTYRENE | - |
dc.subject.keywordPlus | SEPARATION | - |
dc.subject.keywordPlus | EQUILIBRIA | - |
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