Letter | Published:

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

Nature volume 166, page 148 (22 July 1950) | Download Citation

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Abstract

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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References

  1. 1.

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

  2. 2.

    , and , Textil. Ind., 53, 157, 187, 219 245 (1938).

  3. 3.

    , “Mercerizing” (London, 1941).

  4. 4.

    , and , J. Phys. Chem., 45, 717 (1941).

  5. 5.

    , and , Pulp and Paper Mag. Can., 41, 337 (1940).

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Author information

Affiliations

  1. Billerud A.B. Research Laboratory, Säffle.

    • LEIF JÖRGENSEN
  2. Institute of Physical Chemistry, Uppsala. March 8.

    • EDGAR RIBI

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DOI

https://doi.org/10.1038/166148a0

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