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首页> 外文期刊>RSC Advances >A molecular study of modern oil paintings: investigating the role of dicarboxylic acids in the water sensitivity of modern oil paints
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A molecular study of modern oil paintings: investigating the role of dicarboxylic acids in the water sensitivity of modern oil paints

机译：现代油画的分子研究：研究二羧酸在现代油漆水敏感度中的作用

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摘要

The 20th century has seen a significant evolution in artists' paint formulation and technology which is likely to relate to the new conservation challenges frequently presented by modern oil paintings, including unpredictable water- and solvent-sensitivity. This study examined the molecular causes and mechanisms behind these types of modern oil paint vulnerability. Research performed up to now has suggested a correlation between the occurrence of water sensitivity and the presence of relatively high amounts of extractable free dicarboxylic acids. To explore this further, as well as the influence of paint formulation, a set of model paint samples, produced in 2006 using commercial tube paints to which known amounts of additives were added, were analysed. The samples were tested for water sensitivity by aqueous swabbing and characterised using transmission Fourier Transform-Infra Red spectroscopy (FTIR) to determine the molecular composition of the main paint constituents, High Performance Liquid Chromatography-Mass Spectrometry (HPLC-MS), to identify the type(s) of drying oils used as binders, and Gas Chromatography-Mass Spectrometry (GC-MS) using a recently developed analytical procedure that can discriminate and quantify free fatty and dicarboxylic acids, as well as their corresponding metal soaps (carboxylates of fatty and dicarboxylic acids). The results indicated that the addition of small amounts of additives can influence the water sensitivity of an oil paint, as well as its molecular composition. Additionally the nature of the ionomeric/polymeric network appears to be a significant determining factor in the development of water sensitivity.
机译：20世纪已经看到艺术家的涂料配方和技术演进显著这很可能是涉及到频繁现代油画，包括不可预测的水性和溶剂灵敏度提出了新的挑战养护。本研究的分子原因和机制，这些类型的现代油画漏洞的后面。研究进行到现在为止还建议水敏感性的发生和相对高量的可萃取游离二羧酸的存在之间的相关性。探索涂料配方中，一组模型油漆样品，采用向其中加入添加剂的已知量的商业管油漆2006年生产的该进一步的，以及影响，进行了分析。将样品通过水擦拭水敏感性进行了测试，使用透射傅立叶变换红外光谱（FTIR）来确定主漆成分的分子组成，其特征在于，高效液相色谱法 - 质谱法（HPLC-MS），以识别使用最近开发的分析方法类型用作粘合剂干性油的（一个或多个），和气相色谱 - 质谱法（GC-MS），其可以区分和量化游离脂肪酸和二羧酸，以及它们的相应的金属皂（脂肪酸的羧酸盐和二羧酸）。结果表明，加入少量的添加剂可影响的油漆的水敏感性，以及其分子组成。此外，所述离聚物/聚合物网络出现的性质是在水敏感性的发展显著决定因素。

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  • 来源
    《RSC Advances》 |2018年第11期|共12页
  • 作者

    Banti Donatella; La Nasa Jacopo; Tenorio Anna Lluveras; Modugno Francesca; van den Berg Klaas Jan; Lee Judith; Ormsby Bronwyn; Burnstock Aviva; Bonaduce Ilaria;

  • 作者单位

    Courtauld Inst Art Somerset House London WC2R 0RN England;

    Univ Pisa Dept Chem &

    Ind Chem Via Moruzzi 13 I-56124 Pisa Italy;

    Univ Pisa Dept Chem &

    Ind Chem Via Moruzzi 13 I-56124 Pisa Italy;

    Univ Pisa Dept Chem &

    Ind Chem Via Moruzzi 13 I-56124 Pisa Italy;

    Cultural Heritage Agcy Netherlands RCE Hobbemastr 22 NL-1071 ZC Amsterdam Netherlands;

    Millbank Conservat Dept Tate London SW1P 4RG England;

    Millbank Conservat Dept Tate London SW1P 4RG England;

    Courtauld Inst Art Somerset House London WC2R 0RN England;

    Univ Pisa Dept Chem &

    Ind Chem Via Moruzzi 13 I-56124 Pisa Italy;

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  • 正文语种 eng
  • 中图分类 化学;
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