Applied Physics A

, Volume 79, Issue 2, pp 389–392 | Cite as

The impact of gallic acid on iron gall ink corrosion

  • V. Rouchon-Quillet
  • C. Remazeilles
  • J. Bernard
  • A. Wattiaux
  • L. Fournes
Article

Abstract

Many old manuscripts suffer from iron-gall ink corrosion, threatening our graphic heritage. Corroded papers become brown and brittle with age. The chemical reactions involved in this corrosion are relatively well known: they include both acidic hydrolysis and oxidation catalysed by free iron(II). Yet, a great variety of iron-gall ink recipes, including a wide range of constituents can be found in the literature and the visual aspect of old inks, can be very different from one inscription to another, even if they have been written on the same sheet of paper. This suggests that even if the free iron(II) plays a dominant role in the paper alteration, the contribution of other ingredients should not be neglected. For this reason, we explored the impact gallic acid may have on the corrosion mechanisms and in particular on the oxidation reactions. These investigations were carried out on laboratory probes prepared with paper sheets immersed in different solutions, all containing the same amount of iron sulphate, and different gallic acid concentrations. These probes were then artificially aged and their degradation state was evaluated by bursting strength measurements, FTIR spectrometry and Mössbauer spectrometry. All these analyses lead us to conclude that gallic acid has an influence on the iron(III)/iron(II) ratio, probably because of its reducing properties.

Keywords

Gallic Acid Iron Sulphate Cotton Linter Cellulose Oxidation Sulphate Heptahydrate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • V. Rouchon-Quillet
    • 1
  • C. Remazeilles
    • 1
  • J. Bernard
    • 1
  • A. Wattiaux
    • 2
  • L. Fournes
    • 2
  1. 1.L.E.M.M.A. (Laboratoire d’Etude des Matériaux en Milieux Agressifs)Université de La RochelleLa Rochelle Cedex 1France
  2. 2.Institut de Chimie de la Matière Condensée de BordeauxUPR 9048/CNRSPessacFrance

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