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- W1790954467 abstract "Institute for Sustainable Heritage, University College London, Central House. 14 Upper Woburn Place London,WC1H 0NN London, UKThere has been a growing interest in laser cleaning applications for a variety of organic materials such aspaper, parchment, textiles, and leather during the last decade. However, archaeological organicmaterials, notably papyrus, have rarely been investigated. This contribution examines whether removal ofburial encrustation can be justified in view of its short-term and long-term effects on the substrate. Toexamine this, tests using mock objects have been performed. Using artificially soiled and archaeologicalpapyrus samples, optimization of laser cleaning parameters using a picosecond laser (1064 nm, variousoperating conditions) was attempted. Optimization was based on colorimetry, optical microscopy,scanning electron microscopy, Fourier transform infrared spectroscopy, and cellulose degree ofpolymerization data, both before and after accelerated degradation. In papyrus, there is no clear damagethreshold, and substrate degradation can always be observed and is comparable in treated (cleaned) anduntreated (soiled) objects. Therefore, the decision on whether to clean papyrus using lasers ispredominantly based on aesthetic and treatability (e.g. need for consolidation) criteria." @default.
- W1790954467 created "2016-06-24" @default.
- W1790954467 creator A5025313121 @default.
- W1790954467 date "2010-12-01" @default.
- W1790954467 modified "2023-09-25" @default.
- W1790954467 title "Lasers in the Conservation of Artworks VIII" @default.
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- W1790954467 doi "https://doi.org/10.1201/b10567" @default.
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