Formation and characterization of cellulose films from a liquid crystalline solution of cellulose in ammonia/ammonium thiocyanate
Article first published online: 10 MAR 2003
Copyright © 1990 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 41, Issue 3-4, pages 587–594, 1990
How to Cite
Chen, Y.-S., Yang, K. S. and Cuculo, J. A. (1990), Formation and characterization of cellulose films from a liquid crystalline solution of cellulose in ammonia/ammonium thiocyanate. J. Appl. Polym. Sci., 41: 587–594. doi: 10.1002/app.1990.070410310
- Issue published online: 10 MAR 2003
- Article first published online: 10 MAR 2003
- Manuscript Accepted: 25 SEP 1989
- Manuscript Received: 28 AUG 1989
Films were cast from liquid crystalline solutions of cellulose in an ammonia (NH3)/ammonium thiocyanate (NH4SCN) solvent. Microscopic examination of the cellulose liquid crystalline solutions used for the film formation exhibited the so-called conjugated phase. It displayed a fingerprint and a uniformly dispersed highly birefringent pattern. Without additives, the films made from these liquid crystalline solutions are clear, flexible, and have high strength comparable to commercial Cellophone® films. The infrared crystallinity index of the film was somewhat higher than that of other cellulose II materials.