Figure 2

Micro-FTIR spectrum of the varnish from the painting, obtained by spectral subtraction of the fiber of Japanese paper from the sample. Signals: 1: OH stretching; 2: C-H bending of methylic and/or methylenic groups; 3 and 6: C = O and C-O stretching; 4 and 5: C-H bending of methylic and/or methylenic groups.