Počet záznamů: 1
High Temperature Interactions of Lead Palmitate with Linseed Oil
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SYSNO ASEP 0617848 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název High Temperature Interactions of Lead Palmitate with Linseed Oil Tvůrce(i) Barannikov, Ruslan (UACH-T) RID, SAI
Hermans, J. (NL)
Plocek, Jiří (UACH-T) RID, ORCID, SAI
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Vykydalová, Anna (UACH-T) ORCID, RID, SAI
Mahun, Andrii (UMCH-V) ORCID, RID
Kobera, Libor (UMCH-V) RID, ORCID
Švarcová, Silvie (UACH-T) SAI, RID, ORCIDZdroj.dok. Dalton Transactions. - : Royal Society of Chemistry - ISSN 1477-9226
Roč. 54, č. 14 (2025), s. 5764-5778Poč.str. 15 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova lead carboxylates ; lead palmitate ; linseed oil ; DSC ; FTIR ; XRPD Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry CEP LM2023066 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora UACH-T - RVO:61388980 ; UMCH-V - RVO:61389013 UT WOS 001440496300001 EID SCOPUS 105000166165 DOI https://doi.org/10.1039/D4DT03267E Anotace This study investigates the high-temperature interactions between lead palmitate (Pb(C16)2) and linseed oil, revealing complex phase transformations and structural changes critical for understanding metal soap formation in oil paintings. Through complementary analytical techniques including DSC, XRPD, FTIR, and solid-state NMR, we identified two significant phenomena: the formation of mixed lead palmitate-stearate compounds and the emergence of a high-temperature lead palmitate polymorph. When heated to 112 °C, lead palmitate in linseed oil undergoes partial conversion to mixed lead palmitate-stearate complexes, likely due to interactions with stearic acid present in the oil either in a free form or as a part of triglycerides. Additionally, we observed the formation of a metastable high-temperature polymorph characterized by hemi-directed coordination around lead atoms, similar to structures found in short-chain lead carboxylates. The transformation kinetics of this polymorph appears as a complex process influenced by several factors. These findings provide crucial insights into the behavior of lead soaps in oil paintings during thermal treatments and contribute to our understanding of metal soap-induced degradation in artistic and cultural heritage materials. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2026 Elektronická adresa https://hdl.handle.net/11104/0364943
Počet záznamů: 1