Abstract
A comparative study on two methods for dissolving of powder lignocelluloses, derived from wood lignocelluloses and from short-length flax fibers, in DMAc/LiCl was carried out. It was shown that DPv values of the samples and lignin content significantly affected their solubility. The lower these values were, the better the solubility of the samples was. The solubilities of the powdered samples obtained from wood lignocelluloses were not significantly different when dissolved by both methods of dissolution. As a result of the dissolution, the particles of powder samples degraded of at the fibrillar level in the longitudinal direction, the additional degradation also took place at the molecular level. The samples regenerated from solutions were insoluble but exhibited high swelling capacities (from 250 to 490%). This was explained by the fact that differently shaped particles of the samples have a developed system of pores.
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Original Russian Text © N.E. Kotelnikova, Yu.V. Bykhovtsova, A.M. Mikhailidi, N.N. Saprykina, 2014, published in Khimiya Rastitel’nogo Syr’ya, 2014, No. 1, pp. 27–36.
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Kotelnikova, N.E., Bykhovtsova, Y.V., Mikhailidi, A.M. et al. Comparative study on the methods for dissolving powder lignocelluloses in DMAc/LiCl and chemical properties of samples regenerated from the solutions. Russ J Bioorg Chem 41, 700–707 (2015). https://doi.org/10.1134/S1068162015070067
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DOI: https://doi.org/10.1134/S1068162015070067