Abstract
IN a communication under the above title, published in Nature of May 31, 1947, p. 746, J. L. Mongar and A. Wassermann report some experiments on the de-swelling of calcium alginate fibres in salt solutions. They noted that water-swollen alginate fibres when placed in various alkali-salt solutions first contract and then increase in length. The authors suggest that the contraction results from destruction of calcium ion cross-links between alginate chains as the calcium is replaced by alkali ions. They propose also that plastic flow is mainly responsible for the final swelling effect.
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References
Flory and Rehner, J. Chem. Phys., 11, 521 (1943); Flory, Chem. Rev., 35, 51 (1944).
Hermans, J. J., Trans. Farad. Soc., 43, 91, pt. 8–9 (Aug.–Sept. 1947).
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INGERSOLL, H., JOHNSON, A. Ionic Exchange and Fibre Contraction. Nature 162, 225 (1948). https://doi.org/10.1038/162225a0
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DOI: https://doi.org/10.1038/162225a0
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