Investigation of the structure of cellulose in LiCl/DMAc solution and its gelation behavior by small-angle X-ray scattering measurements

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Abstract

Cellulose gels were prepared from cellulose in lithium chloride/N,N- dimethylacetamide (LiCl/DMAc) solution. When the cellulose concentration in the solution is above the one at which cellulose molecules ovelap, cellulose gels were formed. While the gel prepared by the adition of water was turbid, the one prepared by the ion exchange was colorless, transparent, and optically anisotropic. In order to explain this gelation behavior of cellulose, small-angle X-ray scattering (SAXS) measurements of the cellulose solutions and the gels were performed. The SAXS profiles of the cellulose solutions and the gels suggested that the large-scale fluctuation of the molecular chain density in the solution can be the origin of the molecular aggregates level were discussed in terms of the phase separation and the molecular association. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.

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Ishii, D., Tatsumi, D., Matsumoto, T., Murata, K., Hayashi, H., & Yoshitani, H. (2006). Investigation of the structure of cellulose in LiCl/DMAc solution and its gelation behavior by small-angle X-ray scattering measurements. Macromolecular Bioscience, 6(4), 293–300. https://doi.org/10.1002/mabi.200500231

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