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Table 5 Major infrared band assignments for modelling clay samples from Marburg artwork

From: Modelling clay materials used in artworks: an infrared spectroscopic investigation

Wavenumber/cm−1 Band assignments References
600–700 PVC C–Cl stretching [27,28,29]
700–950 Kaolinite O–H bending, Si–O stretching [21, 26]
800–1200 Kaolinite Si–O stretching [21, 26]
1100–1300 Plasticiser C–O stretching [27,28,29]
1200–1500 PVC C–H bending [27,28,29]
Plasticiser C–H bending [27,28,29]
1535, 1569 Plasticiser phthalate ring stretching [27,28,29]
1600–1700 Water O–H bending [23]
1725 Plasticiser C=O stretching [27,28,29]
2800–3000 PVC C–H stretching [27,28,29]
Plasticiser C–H stretching [27,28,29]
3009 Plasticiser aromatic C–H stretching [23]
3100–3600 Water O–H stretching [23]
3621, 3645, 3673, 3694 Kaolinite O–H stretching [21, 26]