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dc.contributor.authorTyan, HLen_US
dc.contributor.authorWei, KHen_US
dc.date.accessioned2014-12-08T15:48:51Z-
dc.date.available2014-12-08T15:48:51Z-
dc.date.issued1998-08-01en_US
dc.identifier.issn0887-6266en_US
dc.identifier.urihttp://hdl.handle.net/11536/32472-
dc.description.abstractBlends of poly(oxybenzoate-p-ethylene terephthalate) (POB-PET) and polyarylate were confirmed to be a partially miscible system by differential scanning calorimetry. When 60/40 POB-PET/PAr blend was annealed at high temperature (above 270 degrees C) for several minutes, the ester-ester interchange( transesterification)in the blend took place immediately, as evidenced by Fourier Transformed infrared analyses. The analysis of the blend annealed at 290 degrees C by H-1-C-13 nuclear magnetic resonance disclosed that there were four new diads appearing in 15 min and an additional one produced in 60 min during the heat treatment. The miscibility between POB-PET and polyarylate increased with the mol concentration of these new diads judging from differential scanning calorimetry. The evolution of the concentration of the diad ethylene glycol-isophthalate during the annealing can be described by a second-order reaction. The activation energy of forming the diad ethylene glycol-isophthalate was 26.5 kcal/mol, and the preexponential factor for the transesterification reaction is 3.7 x 10(8) min(-1). (C) 1998 John Wiley & Sons, Inc.en_US
dc.language.isoen_USen_US
dc.subjectmiscibilityen_US
dc.subjecttransesterificationen_US
dc.subjectkineticsen_US
dc.subjectpolyarylateen_US
dc.subjectliquid crystalline copolyestersen_US
dc.titleMiscibility and transesterification in blends of liquid crystalline copolyesters and polyarylateen_US
dc.typeArticleen_US
dc.identifier.journalJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICSen_US
dc.citation.volume36en_US
dc.citation.issue11en_US
dc.citation.spage1959en_US
dc.citation.epage1969en_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.identifier.wosnumberWOS:000074604600017-
dc.citation.woscount7-
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