Conclusions
Problems of stoichiometry and of the depth of the phase transition in mercerizing with NaOH solutions of various concentrations have been examined from the position of formation of an additive compound (inclusion compound) of sodium hydroxide and cellulose.
An estimate has been made of the alkali and water contents in regions of alkali celluloses having different order of structural elements, and a method has been indicated for calculating optimum concentrations of the mercerizing solution.
Conclusions about the presence of optimum concentrations at the end of the phase transition region have been confirmed by data on the structure of the xanthate and filterability of the viscose.
Performing the mercerization of celluloses with NaOH solutions whose concentrations correspond to regions adjoining the phase transition region will afford an opportunity to prepare spinning solutions with good filterability and with a reduced consumption of carbon disulfide.
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Translated from Khimicheskie Volokna, No. 1, pp. 5–9, January–February, 1988.
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Irklei, V.M., Goikhman, A.S. Phase transitions in mercerization and alkali distribution in alkali cellulose. Fibre Chem 20, 1–7 (1988). https://doi.org/10.1007/BF00544750
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DOI: https://doi.org/10.1007/BF00544750