Chitosan as matrix for bio-polymer dispersed liquid crystal systems.

Autor: Marin L; Petru Poni Institute of Macromolecular Chemistry of Romanian Academy, Iasi, Romania. lmarin@icmpp.ro, Popescu MC, Zabulica A, Uji-I H, Fron E
Jazyk: angličtina
Zdroj: Carbohydrate polymers [Carbohydr Polym] 2013 Jun 05; Vol. 95 (1), pp. 16-24. Date of Electronic Publication: 2013 Feb 26.
DOI: 10.1016/j.carbpol.2013.02.028
Abstrakt: 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'-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.
(Copyright © 2013 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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