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X-Ray Analysis of the Swelling of Wood Pulp in Sodium Hydroxide Solution

Naturevolume 166page148 (1950) | Download Citation



INVESTIGATIONS1 on the hydrolysis and water-regaining properties of wood pulp, cotton and cotton linters swelled in sodium hydroxide solutions of varying concentrations showed that, whereas for wood pulps a low constant-limit degree of polymerization and high constant water-regain were reached by swelling in an 8 per cent lye, it was necessary to swell cotton and cotton linters in a 10 per cent solution in order to obtain a similar result. These differences between swollen samples of the two fibres might be due to easier mercerizing, that is, transformation of the cellulose I lattice into the cellulose II lattice, in the case of the wood pulp as compared with the cotton linters.

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  1. 1

    Jörgensen, L., Acta Chemica Scand., 4, 185 (1950).

  2. 2

    Schramek, W., and Thomas, H., Textil. Ind., 53, 157, 187, 219 245 (1938).

  3. 3

    Marsh, J. T., “Mercerizing” (London, 1941).

  4. 4

    Sisson, W., and Saner, J., J. Phys. Chem., 45, 717 (1941).

  5. 5

    Katz, J. R., and Seiberlich, J., Pulp and Paper Mag. Can., 41, 337 (1940).

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  1. Billerud A.B. Research Laboratory, Säffle

  2. Institute of Physical Chemistry, Uppsala



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