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醇酸基涂料中金属皂形成的初步见解：使用傅里叶变换红外光谱法的概念验证研究

First Insights into the Formation of Metal Soaps in Alkyd-Based Paints: A Proof-of-Concept Investigation Using FTIR Spectroscopy.

作者信息

Poli Tommaso, Haaf Michael P, Piccirillo Anna, Costa Abby P, Craig Rebecca L, Pozzi Federica

机构信息

Dipartimento di Chimica, Università di Torino, Via Giuria 7, 10125 Turin, Italy.

Department of Chemistry, Ithaca College, 953 Danby Road, Ithaca, NY 14850, USA.

出版信息

Molecules. 2024 Dec 11;29(24):5840. doi: 10.3390/molecules29245840.

DOI:10.3390/molecules29245840
PMID:39769929
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11678634/
Abstract

The formation of metal soaps or carboxylates in oil paintings is a widely studied topic. Expanding upon the extant research on the subject, this work investigates the formation of metal soaps as pertaining to alkyd-based media. Especially popular in modern and contemporary art, alkyd paints are complex commercial formulations mainly containing a polyester backbone obtained by the condensation of glycerol and phthalic acids, where the third free alcoholic function is esterified with a blend of saturated and unsaturated fatty acids. The formulation may also contain cross-linking agents, dries, and catalysts. Compared to drying oils, alkyd systems have different stability and mobility, likely prompting different kinetics in the formation of metal soaps. This work explores the formation of metal carboxylates in mock-up paints prepared as mixtures of an alkyd binder with potassium hydroxide and three commonly used pigments (smalt, zinc white, and lead white) at ambient conditions and upon artificial aging. As a second step, samples from two contemporary works by Italian artists Franco Garelli and Luciano Minguzzi were investigated for comparison. The results confirm the formation of metal soaps in both mock-up and real paints, paving the way for future research, with significant implications especially for the conservation of modern and contemporary artworks.

摘要

油画中金属皂或羧酸盐的形成是一个被广泛研究的课题。在现有关于该主题研究的基础上，这项工作研究了与醇酸基介质相关的金属皂的形成。醇酸漆在现代和当代艺术中特别流行，是复杂的商业配方，主要包含由甘油和邻苯二甲酸缩合得到的聚酯主链，其中第三个游离醇官能团用饱和脂肪酸和不饱和脂肪酸的混合物进行酯化。该配方还可能包含交联剂、催干剂和催化剂。与干性油相比，醇酸体系具有不同的稳定性和流动性，这可能导致金属皂形成过程中的动力学不同。这项工作探索了在环境条件下以及人工老化后，由醇酸粘合剂与氢氧化钾和三种常用颜料（蓝玻璃、锌白和铅白）混合制备的模拟漆中金属羧酸盐的形成。第二步，对意大利艺术家佛朗哥·加雷利和卢西亚诺·明古齐的两件当代作品的样本进行了调查以作比较。结果证实了在模拟漆和真实漆中都形成了金属皂，为未来的研究铺平了道路，尤其对现代和当代艺术品的保护具有重要意义。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/106694230749/molecules-29-05840-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/ba9358555b17/molecules-29-05840-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/25fc7aea33f4/molecules-29-05840-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/73398374ee2a/molecules-29-05840-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/7410c38bcfbf/molecules-29-05840-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/fb56ac95bbcc/molecules-29-05840-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/8aa6c3241c85/molecules-29-05840-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/98fb76364eab/molecules-29-05840-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/7ca134e45117/molecules-29-05840-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/9c9e81e6474a/molecules-29-05840-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/13e96d5ed45a/molecules-29-05840-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/106694230749/molecules-29-05840-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/ba9358555b17/molecules-29-05840-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/25fc7aea33f4/molecules-29-05840-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/73398374ee2a/molecules-29-05840-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/7410c38bcfbf/molecules-29-05840-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/fb56ac95bbcc/molecules-29-05840-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/8aa6c3241c85/molecules-29-05840-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/98fb76364eab/molecules-29-05840-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/7ca134e45117/molecules-29-05840-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/9c9e81e6474a/molecules-29-05840-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/13e96d5ed45a/molecules-29-05840-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0ea5/11678634/106694230749/molecules-29-05840-g011.jpg

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本文引用的文献

1
A Critical Review on the Analysis of Metal Soaps in Oil Paintings.关于油画中金属皂分析的批判性评论。
ChemistryOpen. 2021 Sep;10(9):904-921. doi: 10.1002/open.202100166.
2
Conservation Issues of Modern Oil Paintings: A Molecular Model on Paint Curing.现代油画的保护问题：油漆固化的分子模型
Acc Chem Res. 2019 Dec 17;52(12):3397-3406. doi: 10.1021/acs.accounts.9b00296. Epub 2019 Nov 19.
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Interactions of natural resins and pigments in works of art.天然树脂与颜料在艺术品中的相互作用。
J Colloid Interface Sci. 2017 Oct 1;503:1-9. doi: 10.1016/j.jcis.2017.04.094. Epub 2017 May 2.
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Alkyd paints in art: characterization using integrated mass spectrometry.艺术中的醇酸树脂涂料：使用集成质谱法进行表征。
Anal Chim Acta. 2013 Oct 3;797:64-80. doi: 10.1016/j.aca.2013.08.021. Epub 2013 Aug 20.