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Optical Birefringence and Crystallinity of Wool Fibres in Formic Acid

Abstract

RECENT infra-red and X-ray measurements by Bendit1 show that the crystalline structure in α-keratin is only partially destroyed by the exposure of the structure to 98 per cent formic acid vapour. The optical birefringence measurements reported here also indicate that considerable crystallinity is retained when wool fibres are placed in 98 per cent formic acid. Measurements were made on snippets of wool fibre in water and in 98 per cent formic acid.

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References

  1. Bendit, E. G. (unpublished observations).

  2. Fraser, R. D. B., Nature, 172, 675 (1953).

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  3. Haly, A. R., and Swanepoel, O., Text. Res. J., 31, 966 (1961).

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  4. Haly, A. R. (personal communication).

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FEUGHELMAN, M. Optical Birefringence and Crystallinity of Wool Fibres in Formic Acid. Nature 212, 497–498 (1966). https://doi.org/10.1038/212497b0

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