Chitosan as matrix for bio-polymer dispersed liquid crystal systems

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• 作者：Luminita Marin^a ; ^{lmarin@icmpp.ro} ; ^{lmarin2011973@yahoo.com} ; Maria-Cristina Popescu^a ; Andrei Zabulica^a ; Hiroshi Uji-I^b ; Eduard Fron^b
• 关键词：Chitosan ; 4-Cyano-4&prime ; -pentylbiphenyl ; Anchoring effect ; Ordering coupling at interface ; Radial configuration
• 刊名：Carbohydrate Polymers
• 出版年：2013
• 出版时间：5 June, 2013
• 年：2013
• 卷：95
• 期：1
• 页码：16-24
• 全文大小：1612 K

文摘

The obtaining of bio-polymer dispersed liquid crystal (bio-PDLC) systems based on a chitosan polymer matrix is reported here for the first time. The new PDLC composites have been obtained by encapsulation of 4-cyano-4¡ä-pentylbiphenyl (5CB) as low molecular weight liquid crystal into chitosan, and they have been characterized by polarized optical microscopy, differential scanning calorimetry, electron and transmission scanning microscopy, Raman and fluorescence spectroscopy.

Submicrometric liquid crystalline droplets with uniform size distribution and density have been obtained for low liquid crystal content into the PDLCs. The droplets have a radial configuration being anchored into chitosan matrix by an interface ordering coupling phenomenon.