Imaging evaluation of local treatments for foxed papers

• Marta Matos ^[1] ; Francisca Figueira ^[2] ; Teresa Ferreira ^[3]
  1. [1] Universidade de Évora

     Universidade de Évora

     Senhora da Saúde, Portugal

     
  2. [2] Laboratório José de Figueiredo, Direçao Geral do Património Cultural
  3. [3] HERCULES Laboratory, University of Évora; Chemistry Department at the Science and Technology School, University of Évora

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• Localización: Intangibility Matters: IPERION CH International Conference on the values of tangible heritage: IMaTTe 2017 / coord. por Marluci Menezes, Dória Rodrigues Costa, José Delgado Rodrigues, 2017, ISBN 9789724922959, págs. 335-344
• Idioma: inglés
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• Resumen

  • Foxing stains have been a sensitive problema to paper conservators. One the most complicated decisions is whether to remove these foxing stains. The decisión to bleach involves pondering on the aesthetic gain of the artwork´s visibility, versus the somewhat deleterious effect on the ageing properties of its paper support. This study evaluates the effect of local application of three bleaching agents in three different paper simple batches. The agents used were hydrogen peroxide, sodium permanganate and sodium borohydride. So far, the bleaching agent that showed the best overall results for all the papers was hydrogen peroxide.