Fig. 6From: Deep eutectic solvents: green solvents for the removal of degraded gelatin on cellulose nitrate cinematographic filmsµATR-FTIR spectra of an unplasticized CN standard (A, dashed line) and of the studied film base without gelatin residues (B, black). Diagnostic FTIR bands due to the CN base and its plasticizer are accompanied with a blue circleBack to article page