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Heritage Science
Fig. 11 | Heritage Science

Fig. 11

From: Cleaning testing of nineteenth-century plaster surface models with thin polyacrylamide-based gel layers attached to flexible polyethylene films

Fig. 11Fig. 11

ATR/FTIR (4000–350 cm−1) (i) and 2D microFTIR Imaging (4000–650 cm−1) (ii-iv) of coated plaster plates with: A cold pressed linseed oil (CL), B 6 wt% shellac in IMS (SR6) and C Barite-Ca(OH)2 admixture (BC), before soiling (blue line in (i), image (ii), after soiling (orange line in (i), image (iii) and after cleaning (grey line in (i), image (iv). Refer to Additional file 1: Table S3 for the band assignments

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