Number of the records: 1
Initial stages of metal soaps` formation in model paints: The role of humidity
- 1.
SYSNO ASEP 0524433 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Initial stages of metal soaps` formation in model paints: The role of humidity Author(s) Garrappa, Silvia (UACH-T) ORCID, RID, SAI
Kočí, Eva (UACH-T) SAI, RID
Švarcová, Silvie (UACH-T) SAI, RID, ORCID
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Hradil, David (UACH-T) RID, SAINumber of authors 5 Article number 104842 Source Title Microchemical Journal. - : Elsevier - ISSN 0026-265X
Roč. 156, JUL (2020)Number of pages 10 s. Language eng - English Country US - United States Keywords FTIR spectroscopy ; Humidity ; Metal soap ; Oil paint ; X-ray diffraction Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry R&D Projects GA17-15621S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access with time embargo (01.06.2022) Institutional support UACH-T - RVO:61388980 UT WOS 000543430700038 EID SCOPUS 85083745920 DOI 10.1016/j.microc.2020.104842 Annotation The presence of metal soaps is well documented in paintings originating from the 15th century onward, and in numerous cases, the soaps`formation is attributed to environmental factors, like relative humidity, light exposure and/or high temperature. Understanding the formation mechanism, involving effects of these particular factors during artwork`s realization, is crucial for the search of suitable conservation and preservation strategies. In the present study, the role of humidity on the formation of metal carboxylates and other secondary products in mixtures of lead-based pigments (i.e., minium, lead-tin yellow and lead white) with linseed oil was described within the experimental drying of model paints. Samples were exposed to various relative humidity conditions and the processes were monitored by Fourier-transform infrared spectroscopy (FTIR) and powder X-ray diffraction (XRD) involving both the hourly measurements for the monitoring of immediate processes and long-term (up to two months) monitoring to evaluate secondary changes. The acquired data clearly demonstrated the influence that the different levels of humidity may have on the formation of lead carboxylates during the painting's drying. The selected methods were efficient in the reaction monitoring and provided new insights leading to a better understanding of factors affecting the metal soaps' formation in paints. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2021 Electronic address https://www.sciencedirect.com/science/article/pii/S0026265X19321848?via%3Dihub#sec0015
Number of the records: 1