Letter | Published:

Structure of Native and Mercerized Celluloses

Naturevolume 175page1045 (1955) | Download Citation



THE crystal unit-cells proposed by K. Meyer and H. Mark1 and K. Meyer and L. Mish2 for cellulose lattices I and II, and for which there seemed to be general agreement, have been discussed recently by M. K. Sen and S. C. Roy3. These authors have given a new interpretation to X-ray diagrams obtained from these fibres, based on the existence of a strong diffraction intensity corresponding to a reticular distance of the order of 14 A. This interference result had hitherto not been observed for these substances. This new interpretation has been considered with certain reservations by G. O. Warwicker and H. J. Vellard4, who have pointed out the causes of errors already remarked upon by other investigators. H. J. Woods5, on the other hand, has observed a small-angle spot for jute very near that observed by Sen and Roy.

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  1. 1

    Meyer, K., and Mark, H., Z. phys. Chem., B, 115 (1929).

  2. 2

    Meyer, K., and Mish, L., Helv. Chim. Acta, 20, 234 (1937).

  3. 3

    Sen, M. K., and Roy, S. C., Nature, 173, 298 (1954).

  4. 4

    Warwicker, G. O., Nature, 174, 135 (1954). Vellard, H. J., Nature, 174, 135 (1954).

  5. 5

    Woods, H. J., Nature, 174, 136 (1954).

  6. 6

    Legrand, C., J. Polymer Sci., 8, 3, 337 (1952).

  7. 7

    Guinier, A., Ann. de Phys., 12, 161 (1939).

  8. 8

    Fournet, G., and Guinier, A., C.R. Acad. Sci., Paris, 226, 656 (1948).

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  1. Institut Textile de France

    • C. LEGRAND
    •  & A. BONNEMAYRE
  2. Conservatoire des Arts et Métiers

    • A. GUINIER


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