Cellulose in Never-Dried Gel Oriented by an AC Electric Field

Never-dried cellulose gel obtained by slow coagulation from LiCl/N,N-dimethylacetamide (DMAc) solution was exposed to an alternating current electric field. Making use of the birefringence of oriented cellulose and by means of wide-angle X-ray scattering, it was demonstrated that preferred orientati...

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Bibliographic Details
Published in:Biomacromolecules 2009-05, Vol.10 (5), p.1315-1318
Main Authors: Gindl, Wolfgang, Emsenhuber, Gerhard, Maier, Günther, Keckes, Jozef
Format: Article
Language:English
Subjects:
Acetamides - chemistry
Applied sciences
Biocompatible Materials - chemistry
Cellulose - chemistry
Cellulose and derivatives
Electromagnetic Fields
Exact sciences and technology
Gels - chemistry
Lithium Chloride - chemistry
Materials Testing
Natural polymers
Physicochemistry of polymers
Scattering, Radiation
Solutions
X-Rays
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Summary:Never-dried cellulose gel obtained by slow coagulation from LiCl/N,N-dimethylacetamide (DMAc) solution was exposed to an alternating current electric field. Making use of the birefringence of oriented cellulose and by means of wide-angle X-ray scattering, it was demonstrated that preferred orientation of cellulose molecules parallel to the electric field lines is induced in the cellulose gel. The preferred orientation remained unchanged for several days after storage in water and persisted after drying of the cellulose gel.
ISSN:1525-7797
1526-4602
DOI:10.1021/bm801508e