2026-04-13T13:15:55Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1584982025-12-05T02:10:59Zcom_2072_1057col_2072_478772col_2072_478917

00925njm 22002777a 4500 dc Nechyporchuk, Oleksandr author Kolman, Krzysztof author Oriola Folch, Marta author Persson, Michael author Holmberg, Krister, 1946- author Bordes, Romain author 2020-05-03T17:02:11Z 2020-05-03T17:02:11Z 2017 2020-05-03T17:02:11Z In order to assess the effectiveness of various practices for canvas consolidation, model substrates areneeded. In this work, a method of rapid ageing of cotton canvas is described. The method consists oftreatment of the canvas with a mixture of hydrogen peroxide and sulfuric acid at 40◦C during 72 hoursto mimic to some extent the natural processes of oxidation and acid-catalysed hydrolysis of cellulose.Two protocols for canvas degradation were developed, which reduced the degree of polymerization ofcellulose from ca. 6250 to ca. 1350 and 450. The reduction of the mechanical properties and the increaseof the negative charge were also quantified. These samples were compared with a canvas degraded usinga state-of-the-art method that takes up to 20 days. The results show that the developed method canprovide a rapid procedure for preparing small samples for testing various consolidation strategies byconservators. Pintura Conservació i restauració d'obres d'art Envelliment Painting Conservation and restoration of art objects Aging Accelerated ageing of cotton canvas as a model for further consolidation practices