Abstract
DURING work on the structure of paper a need arose to examine it in cross-section at high resolution. The sectioning of plant cell walls in their natural state, for example in wood, does not appear to present insuperable difficulties, and techniques based on the early work of Ribi1 are routinely used. However, no work appears to have been done on the sectioning of pulped fibres, as used in paper, in their dry unswollen state without any pre-treatment. In the skilful work of Asunmaa2 the fibres were pre-treated by swelling and reaction with thallium ethylate, and after drying from water were dried from benzene, to “open the structure”.
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References
Ribi, E., Exp. Cell Res., 5, 161 (1953).
Asunmaa, S., Svensk Paperstidn., 59, 527 (1956).
Goring, D. A. I., Pulp Paper Mag. of Canad., 64, T517 (1963).
Gibbons, I. R., Nature, 184, 375 (1959).
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PAGE, D., SARGENT, J. Ultra-thin Sections of Softwood Tracheids and Paper. Nature 207, 217–218 (1965). https://doi.org/10.1038/207217b0
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DOI: https://doi.org/10.1038/207217b0
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