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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]