Fig. 6From: A diagnostic tool for assessing the conservation condition of cellulose nitrate and acetate in heritage collections: quantifying the degree of substitution by infrared spectroscopyInfrared spectra of an orange module from Relief orange (1966), a blue module from La fête (1967) and a yellow module from Dans la plage (1968). The plasticizers triphenyl phosphate (\(*\)) and diethyl phthalate (+) are identifiedBack to article page