Revista de Ciência e Engenharia Têxtil

Rare earth salts mediated improved rubbing fastness for Indigo dye

Abstract

Padma S Vankar, Archana Gangwar

Indigo dye though rich in blue colour has poor affinity for cellulose cannot penetrate too well and thus it mostly remains at the surface of the fabric after dyeing. This phenomenon is called ring dyeing. Such ring-dyed materials have poor rubbing fastness towards dry and wet test methods. Our objective in this paper has been to use rare earth (RE) salts to overcome the rubbing fastness problem. The RE metals used in this research work are Cerous sulphate, Lanthanum chloride and Yttrium chloride.