Abstract
IN Nature of February 13, p. 298, Sen and Roy report new equatorial reflexions in the X-ray diagrams of native and mercerized celluloses; the corresponding mean spacings are 13.6 A. for native, and 14.4 A. for mercerized, cellulose. Similar extra reflexions have been reported from time to time, but they have always been found to be spurious, in the sense that they were not due to diffraction of the characteristic radiation that was employed. They may even appear when supposedly monochromatic radiation, obtained by reflexion from a crystal, is used, if precautions are not taken to eliminate radiation with a wave-length half that of the selected radiation1,2. However, a commoner cause of spurious reflexions is the diffraction of certain components of the ‘white’ radiation present in the X-ray beam when unfiltered or filtered radiation is used3–6.
Similar content being viewed by others
Article PDF
References
Sauter, E., Z. Phys. Chem., B, 35, 83 (1937).
Kiessig, H., Z. Phys. Chem., B, 43, 79 (1939).
Weissenberg, K., Naturwiss., 17, 181, 624 (1929).
Burgeni, A., and Kratky, O., Z. Phys. Chem., B, 4, 401 (1929).
Mark, H., and Susich, G. v., Z. Phys. Chem., B, 4, 431 (1929).
Sisson, W. A., Clark, G. L., and Parker, E. A., J. Amer. Chem. Soc., 58, 1635 (1936).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
WARWICKER, J. Structures of Native and Mercerized Celluloses. Nature 174, 135 (1954). https://doi.org/10.1038/174135a0
Issue Date:
DOI: https://doi.org/10.1038/174135a0
This article is cited by
-
Structure of Native and Mercerized Celluloses
Nature (1955)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.