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dc.contributor.authorDong, YM
dc.contributor.author董炎明
dc.contributor.authorLi, ZQ
dc.date.accessioned2012-07-24T01:52:58Z
dc.date.available2012-07-24T01:52:58Z
dc.date.issued1998
dc.identifier.citationCHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,1998,19(8):1343-1345zh_CN
dc.identifier.issn0251-0790
dc.identifier.urihttp://dx.doi.org/doi:CNKI:SUN:GDXH.0.1998-08-039
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/13325
dc.description.abstractO-cyanoethylchitosan was prepared at room temperature using sodium hydroxide as catalyst. Solubility of O-cyanoethylchitosan was prior to chitosan. While it dissolved, O-cyanoethylchitosan formed typical cholesteric liquid crystalline texture - fingerprint texture, The fingerprint texture can be frozen in films casted from 5% aqueous acetic acid solution. The droplet texture of positive birefriengence can also be observed in these films, Critical concentrations of cyanoethylchitosan in four acidic solvents were determined using polarized microscopy. All critical concentration values were in the range of 19%similar to 20%(volume fraction), independing of the acidity of solvents.zh_CN
dc.language.isoenzh_CN
dc.publisherHIGHER EDUCATION PRESSzh_CN
dc.subjectchitosanzh_CN
dc.subjectcyanoethylchitosanzh_CN
dc.subjectlyotropic liquid crystalzh_CN
dc.subjectcholesteric phasezh_CN
dc.subjectcritical concentrationzh_CN
dc.titleSynthesis and characterization of a new chitosan derivatives with liquid crystalline behavior - O-cyanoethylchitosanzh_CN
dc.typeArticlezh_CN


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