Recalcitrance of hair in historical plasters

J. Tintner, H. Rennhofer, Craig J. Kennedy, William A. Revie, H. Weber, C. Pavlik, J. Lanszki

Research output: Contribution to journalArticle

Abstract

Hair amendments were extracted from the lime plasters of historical buildings with an age ranging from recent times until the 12th century. Infrared spectroscopy has been used to assess chemical changes, small-angle X-ray scattering (SAXS) for changes of the physical structure. As a reference a sample set of 130 recent samples has been collected comprising different species. The only strong impact on hair chemistry was detected for grinding the samples. This pretreatment separated the chemical fingerprint based on methylene bands (2920 and 2850 cm−1) and the C=O vibration band at 1740 cm−1. Different species were separated only on a coarse level. Historical samples did not display very clear indicators of aging processes. SAXS results registered a certain grouping of the samples according to age. A clear trend was not found, however. This suggests that age alone is not the key defining factor in the degradation processes in hair.
Original languageEnglish
Article number109333
JournalPolymer Degradation and Stability
Volume181
Early online date12 Aug 2020
DOIs
Publication statusE-pub ahead of print - 12 Aug 2020

Keywords

  • Amendment
  • Animal hair
  • FTIR spectroscopy
  • Lime plaster
  • Small-angle X-ray scattering SAXS

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Polymers and Plastics
  • Materials Chemistry

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  • Cite this

    Tintner, J., Rennhofer, H., Kennedy, C. J., Revie, W. A., Weber, H., Pavlik, C., & Lanszki, J. (2020). Recalcitrance of hair in historical plasters. Polymer Degradation and Stability, 181, [109333]. https://doi.org/10.1016/j.polymdegradstab.2020.109333