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Issue 64, 2017
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The influence of water, lanolin, urea, proline, paraffin and fatliquor on collagen D-spacing in leather

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Abstract

Water interacts with collagen to alter the structure at the fibrillar scale and therefore the mechanical properties of collagen. Humectants or moisturizers also alter the mechanical properties and fibril structure. The nature of these interactions and relationship between the different additives is not well understood. Changes in collagen D-spacing in leather were measured by synchrotron based small angle X-ray scattering in samples stored at various relative humidities and treated with lanolin, fatliquor, urea, proline or paraffin. The D-spacing increased with rising humidity and with increasing lanolin or fatliquor content, but not with treatment with urea, proline or paraffin. Strength increased with the addition of lanolin. Lanolin and fatliquor were shown to act as humectants whereas the other components did not act in this way. The Hofmeister effect is shown not to be a factor in the change in D-spacing, since samples treated with either proline or urea exhibited the same behavior. Different agents used in leather treatment and skin care function by different mechanisms, with collagen water retention being important for some additives but not others.

Graphical abstract: The influence of water, lanolin, urea, proline, paraffin and fatliquor on collagen D-spacing in leather

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Publication details

The article was received on 17 May 2017, accepted on 15 Aug 2017 and first published on 21 Aug 2017


Article type: Paper
DOI: 10.1039/C7RA05560A
Citation: RSC Adv., 2017,7, 40658-40663
  • Open access: Creative Commons BY license
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    The influence of water, lanolin, urea, proline, paraffin and fatliquor on collagen D-spacing in leather

    K. H. Sizeland, H. C. Wells, S. J. R. Kelly, R. L. Edmonds, N. M. Kirby, A. Hawley, S. T. Mudie, T. M. Ryan and R. G. Haverkamp, RSC Adv., 2017, 7, 40658
    DOI: 10.1039/C7RA05560A

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

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      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
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      [Original citation] - Published by The Royal Society of Chemistry.

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