Document Type : Original Article
Department of Organic Colorants, Institute for Color Science and Technology, Tehran, Iran
Center of Excellence for Color Science and Technology, Institute for Color Science and Technology, Tehran, Iran
Department of Color Physics, Institute for Color Science and Technology, Tehran, Iran
Tehran University of Art, Department of Carpet, Tehran, Iran
Nowadays, using sustainable dyeing process has become a necessity, but does not meet performance requirements. Application of biomordants was recommended to enhance the quality of dyeing. In order to design a green dyeing process, oak extract as bio-mordants and madder and weld luteola as natural dyes were used. The FTIR-ATR spectra of the washed wool yarn, mordanted wool yarn and mordanted dyed wool yarns confirmed bonding of wool yarns to the green mordant and dyes through a comparing chemical structure. The effective linkage between yarn, mordant and dye molecules removes the C-N peaks in FTIR-ATR spectra. After dyeing process, fastness and colorimetric attributes of dyed wool yarns were investigated. The K/S values of dyed wool yarns with extracted madder and weld luteola was quantified; properties including light, wash, and rubbing fastnesses were defined as per ISO standard methods.