Natural Dye from Turmeric of Cotton Fabric Modified with Citric Acid

Abstract

Natural dyes generally have low affinity for cotton and hence, fabric need a treatment process to enhance the dye attachment. In this research, cotton was modified by reaction with citric acid in order to achieve carboxylic acid group content on the cellulose surface. The structure of modified cellulose was confirmed by FTIR. Modified cotton was then dyed with turmeric. The color strength values (K/S) and CIELAB color parameters (L*, a*, b* ) of dyed fabric were investigated. It was showed that the modified cotton enhances dyeability as compare with unmodified cotton.