Fig. 1From: Dyeing and fastness properties of Quercus robur with natural mordants on natural fibre a Percent absorption of the dye with Salix alba L. (wood ash). M1: without mordant, M2: pre-mordanting, M3: simultaneous mordanting, M4: post-mordanting. b Percent absorption of the dye with Populus deltoides (wood ash). M1: without mordant, M2: pre-mordanting, M3: simultaneous mordanting, M4: post-mordantingBack to article page