Banou Penelope, Boyatzis Stamatis, Choulis Konstantinos, Theodorakopoulos Charis, Alexopoulou Athena
Department of Conservation of Antiquities and Works of Art, University of West Attica, Egaleo, 12243 Athens, Greece.
Department of Arts, Northumbria University, Newcastle, Newcastle upon Tyne NE1 8ST, UK.
Polymers (Basel). 2023 Jun 2;15(11):2567. doi: 10.3390/polym15112567.
Previous works of the authors have presented the changes in the optical, mechanical, and chemical properties of the oiled areas of the supports that occur upon ageing due to oil-binder absorption in works of art on paper and printed material. In this framework, transmittance FTIR analysis has indicated that the presence of linseed oil induces the conditions to promote the deterioration of the oil-impregnated areas of the paper supports. However, the analysis of oil-impregnated mock-ups did not provide detailed information about the input of linseed oil formulations and the different types of paper support on the chemical changes that occur upon ageing. This work presents the results of ATR-FTIR and reflectance FTIR, which were used for compensating the previous results, proving indications on the effect of different materials (linseed oil formulations, and cellulosic and lignocellulosic papers) on the development of chemical changes, thus, on the condition of the oiled areas upon ageing. Although linseed oil formulations have a determining effect on the condition of the oiled areas of the support, the paper pulp content appears to have an input to the chemical changes that occur in the system of paper-linseed oil upon ageing. The results presented are more focused on the oil-impregnated mock-ups with cold-pressed linseed oil since results have indicated that this causes more extended changes upon ageing.
作者之前的研究表明，由于纸张和印刷材料艺术品中油基粘合剂的吸收，支撑体上涂油区域的光学、机械和化学性质在老化过程中会发生变化。在此框架下，透射傅里叶变换红外光谱（FTIR）分析表明，亚麻籽油的存在会促使纸张支撑体上浸油区域的劣化。然而，对浸油模型的分析并未提供有关亚麻籽油配方输入以及不同类型纸张支撑体对老化过程中发生的化学变化影响的详细信息。这项工作展示了衰减全反射傅里叶变换红外光谱（ATR-FTIR）和反射傅里叶变换红外光谱（reflectance FTIR）的结果，这些结果用于补充先前的结果，证明了不同材料（亚麻籽油配方、纤维素纸和木质纤维素纸）对化学变化发展的影响，进而对老化后涂油区域状况的影响。尽管亚麻籽油配方对支撑体涂油区域的状况有决定性影响，但纸浆含量似乎对老化过程中纸 - 亚麻籽油体系中发生的化学变化有影响。呈现的结果更侧重于用冷榨亚麻籽油处理的浸油模型，因为结果表明这种油在老化时会导致更广泛的变化。
