Fig. 4
From: Early degradation mechanisms at the interface between acrylic grounds and oil paint films
Selected results of multiband imaging carried out in SET1 (commercial primed cotton canvas + oil paint film). The images report only the central area of the canvas and exclude the area in contact with the wooden stretcher. T subjected to artificial ageing with a variation of temperature. RH% subjected to artificial ageing with fluctuation of % relative humidity (RH%). NAT subjected to natural ageing at room temperature.
