The Identification and Analysis of the Modern Binding Media Based on Multiple Analytical Methods
ZHANG Yao-yao1, 2, FU Ying-chun1, 2, WEI Shu-ya1, 2*
1. Institute for Cultural Heritage and History of Science & Technology, University of Science and Technology Beijing, Beijing 100083, China
2. Key Laboratory of Archaeomaterials and Conservation, Ministry of Education, Beijing 100083, China
Abstract：The study of natural organic binders in historical objects is one of the research highlights in cultural heritage. However,identifying and classifying modern binding media used for restoration is also very important in heritage conservation. It is necessary for the subsequent restoration of ancient ceramics to understand the composition of the binding media used in the restoration of ancient ceramics. To address this problem, a batch of modern binding media for restoring ancient ceramics was analyzed by Fourier Transform infrared spectroscopy (FTIR), Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and thermally assisted hydrolysis-methylation pyrolysis-gas chromatography-mass spectrometry (THM-Py-GC/MS) techniques. The results showed that the characteristic absorption peaks of the infrared spectrum of the binding media at 1 252 and 829 cm-1 were in line with the range of characteristic absorption peaks of epoxy compounds and matched with the standard spectrum of epoxy resin in the infrared spectrum library, which indicated that the binding media was an epoxy adhesive. Moreover, additives such as pyridine compounds, benzoate compounds and primary alcohol compounds are also added to the binding media. Then, the chemical composition of the binding media was analyzed by applying Py-GC/MS and THM-Py-GC/MS techniques, and the binding media was detected as a bisphenol A-type epoxy resin. Moreover, to improve the performance of the epoxy resin adhesive, amine curing agent, diisooctyl phthalate plasticizers and diisooctyl phthalate inactive diluent were also detected to be added to the binding media. THM-Py-GC/MS technique affects the analysis and identification of amine curing agents in this binding media due to the presence of methylation reagents, whereas the Py-GC/MS technique is more suitable for the analysis and characterization of epoxy adhesives. In this study, the use of the Py-GC/MS technique can identify the types of modern binding media used for the restoration of ancient ceramic relics, providing a new approach for the analysis and identification of epoxy resin adhesives, as well as a new perspective for the identification of unknown restoration materials for cultural relics.
张瑶瑶，付迎春，魏书亚. 基于多种分析方法对古陶瓷修复胶结材料的分析鉴定[J]. 光谱学与光谱分析, 2024, 44(10): 2785-2794.
ZHANG Yao-yao, FU Ying-chun, WEI Shu-ya. The Identification and Analysis of the Modern Binding Media Based on Multiple Analytical Methods. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(10): 2785-2794.
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