Color trajectories of natural pigments for model fresco samples under heating

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED Dyes and Pigments Pub Date : 2024-07-01 DOI:10.1016/j.dyepig.2024.112318

I.A. Balakhnina , A.S. Pushistova , A.Yu. Chikishev , E.M. Kononova , T.I. Anisimova , N.N. Brandt

引用次数: 0

Abstract

The paper presents a concept of color trajectories as used to characterize fresco pigments and their color changes with increasing temperature. Color trajectories have shapes characteristic of certain colors or individual pigments. For 15 pigments, the minimum temperatures at which changes in their color coordinates become significant are determined. For several samples, heating can significantly change the color coordinates, but the integral color changes can be insignificant. The integral effect under heating of most samples to 740 °C is that the a* and b* color coordinates tend to zero and the lightness decreases. The exceptions are volkonskoite, the color of which becomes brighter after heating, and red lead, the lightness of which becomes greater due to the transformation of orange into light yellow. The results of this work can be used to construct an evolutionary line of real images under an increase in temperature.

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加热条件下模型壁画样品天然颜料的色彩轨迹

本文提出了一个颜色轨迹的概念，用于描述壁画颜料及其颜色随温度升高而发生的变化。颜色轨迹具有特定颜色或个别颜料的特征形状。针对 15 种颜料，确定了它们的色坐标发生显著变化的最低温度。对于一些样品，加热会显著改变色坐标，但整体颜色变化可能并不明显。大多数样品加热到 740 °C 时的整体效果是 a* 和 b* 色坐标趋于零，亮度降低。但伏孔雀石和红铅例外，伏孔雀石在加热后颜色变得更亮，而红铅则由于橙色转变为浅黄色，亮度变得更高。这项工作的结果可用于构建温度升高时真实图像的演变线。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.