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dc.contributor.authorDong, YM
dc.contributor.author董炎明
dc.contributor.author张世英
dc.contributor.authorZhang, SY
dc.date.accessioned2012-09-17T00:22:53Z
dc.date.available2012-09-17T00:22:53Z
dc.date.issued1996
dc.identifier.citationCHINESE JOURNAL OF POLYMER SCIENCE,1996,14(2):134-141zh_CN
dc.identifier.issn0256-7679
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/13619
dc.description.abstractCritical concentrations of lyotropic liquid crystalline ethylcellulose in more than ten solvents were determined using both Abbe refractometer and polarized microscopy. Critical concentration C-crit of forming Liquid crystal phase decreased with increasing solubility parameter delta of solvent until approaching the delta of polymer. Although the alcohols used as solvents had the same variation rule, the critical concentration values of their solutions were much higher, due to their excessive large hydrogen bond component of delta. The experiments of using mixed solvents which showed good linear relation between C-crit and delta also proved this rule. A technique of Transmission Optical Analysis was first used to estimate the concentration dependence of critical phase transition temperature T-crit of EC, and a T-C phase diagram could be drawn.zh_CN
dc.language.isozhzh_CN
dc.publisherSCIENCE CHINA PRESSzh_CN
dc.subjectethyl cellulosezh_CN
dc.subjectlyotropic liquid crystalzh_CN
dc.subjectcritical concentrationzh_CN
dc.subjectsolubility parameterzh_CN
dc.subjectTransmission Optical Analysiszh_CN
dc.subjectphase diagramzh_CN
dc.titleStudies on critical concentration of liquid crystalline ethylcellulosezh_CN
dc.typeArticlezh_CN


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