Paper Conservation at the Wien Museum from 1978 to 1987 with Particular Emphasis on Bleaching Practices

Abstract

Abstract In this study we will outline the history of paper conservation at the Wien Museum, emphasizing particularly on bleaching methods which were carried out during the period of 1978–1987. Our research is primarily based on conservation protocols kept at the museum during the period studied. Furthermore, theme-centred expert interviews were conducted with conservators who had worked for the collection. A literature review of common bleaching methods in paper conservation helped putting our observations into the larger context of scientific discourse at the time. During the period under study the main bleaching agents were hydrogen peroxide combined with diethyl ether and chloramine T. There were uncertainties regarding pre- and post-treatment options such as washing, deacidification and “anti-chlorine baths”. In general, treatment protocols and interviews reflect the state of published research of that time.