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In situ characterisation of readhesion treatments for ceiling paintings using unilateral NMR

Richardson, E; Woolley, E; Corda, K; Julien-Lees, S; Pinchin, S; Roberts, Z; (2017) In situ characterisation of readhesion treatments for ceiling paintings using unilateral NMR. Insight - Non-Destructive Testing and Condition Monitoring , 59 (5) pp. 249-255. 10.1784/insi.2017.59.5.249. Green open access

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Abstract

Ceiling and wall paintings pose significant challenges for historic house management due to their position at the interface between the environment and the building. Tight restrictions to modifications on built heritage prevent total control of the environment, resulting in temperature and humidity fluctuations. Different hygrothermal responses within the wall painting stratigraphy frequently lead to fracturing and lifting of paint layers, necessitating remedial conservation to readhere areas of detachment. Assessing the success of readhesion interventions is difficult due to the hidden nature of the treatment and, often, limited access. This paper presents comparative results of two different adhesive treatments employed during the conservation of the baroque ceiling painting in the Queen's Staircase at Hampton Court Palace, analysed with unilateral nuclear magnetic resonance (NMR). This non-invasive technique enabled monitoring of the adhesive systems, based on Jun Funori and BEVA® 371 adhesives, up to a depth of 3,500 μm into the ceiling by providing specially resolved proton density profiles before and after treatment. The results offer a unique and pertinent assessment of treatment areas within a strictly limited timeframe. It is shown that the solvent carrier leaves the system within 24 hours and that the ultimate deposition of the adhesive can be identified.

Type: Article
Title: In situ characterisation of readhesion treatments for ceiling paintings using unilateral NMR
Open access status: An open access version is available from UCL Discovery
DOI: 10.1784/insi.2017.59.5.249
Publisher version: https://doi.org/10.1784/insi.2017.59.5.249
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of History of Art
URI: https://discovery.ucl.ac.uk/id/eprint/1545050
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