Skip to main content

Table 1 Vibrational band assignment in the FTIR spectra reported in Fig. 2

From: Synthetic materials in art: a new comprehensive approach for the characterization of multi-material artworks by analytical pyrolysis

Wave number (cm−1)

Assignment

3664–3430

ν N–H (non H-bonded)

3286

ν N–H (H-bonded)

3191–3012

ν C–H (aromatic ring)

2971

νa C–H3

2931

νa C–H2

2869

νs C–H3

1731

ν O=C (ester, PVAc)

1671

ν O=C (monodentate urea disordered H-bonded)

1641

ν O=C (urea strongly H-bonded)

1592

ν C=C (aromatic ring)

1535

δ O=C–N–H; ν O = C-N–H

1504

ν-N=N-(β-naphthol)

1477

δ C–H2

1442

δa C–H3

1411

Trimer formation band (isocyanurate ring)

1373

δs C–H3

1338

ω C–H2

1294, 1226

ν C–N

1093

νa C–O–C (polyether-based polyol)

1018

ν C–O–H

939

ρ C–H3

892, 885, 867, 813

ω C–H (aromatic ring)

794

ρ C–H (PVAc)

750, 709, 669

δ C–H (aromatic ring)