ABSTRACT

This study focuses on the use of micro-sensitive methods – nanoindentation, dynamic water vapour sorption, and X-ray microtomography – to examine the physical properties of small volumes of artists’ materials. The novel methodology proposed in this paper was tested on laboratory-prepared chalk-based ground samples and subsequently applied to distemper paint samples taken from the polychrome walls of Eidsborg stave church. This article discusses key parameters that can be used to inform macro-sized mock-ups mimicking physical and mechanical behaviour of artistic materials, and highlights limitations of such an approach for highly heterogeneous paint systems. Dynamic water vapour sorption measurements allowed determination of the pigment volume concentration (PVC) of distemper paint from Eidsborg stave church as 95%. To the authors’ knowledge, this represents the first assessment of PVC for historic distemper paint using a non-destructive experimental technique, which can be extended to other hygroscopic samples of known composition.

摘要

这项研究的重点是使用微敏感方法——纳米压痕、动态水蒸气吸附和 X 射线显微断层扫描——来检查少量艺术家材料的物理特性。本文提出的新方法在实验室制备的基于粉笔的地面样品上进行了测试，随后应用于从 Eidsborg 木板教堂的彩色墙壁上采集的调温涂料样品。本文讨论了可用于为模仿艺术材料的物理和机械行为的宏观模型提供信息的关键参数，并强调了这种方法对于高度异质涂料系统的局限性。动态水蒸气吸附测量可以确定来自 Eidsborg 木板教堂的 distemper 涂料的颜料体积浓度 (PVC) 为 95%。据作者所知，