DYEING OF COTTON WITH NATURAL COLORANTS EXTRACTED FROM RED ROSE FLOWER

Abstract

Cotton substrate was dyed with an extract of red rose petals. The dyeing was carried out with and without metallic mordants (alum, copper sulphate, nickel sulphate, ferric chloride and ferrous sulphate), using two different dyeing systems: pre-mordanting system, simultaneous mordanting system. The colour of the cotton substrate was measured by Data color in terms of K/S, and CIELAB values. In both mordanting system ferrous sulphate produced dark shade, the K/S value for simultaneous system is 16.76 and for pre-mordant K/S values is 12.05. It is also observed the higher %fix is of simultaneous system for ferrous sulphate is 76.80% and for pre-moderating the % fix is 71.50%. But statistical analysis of both techniques tells us the reproducibility of copper sulphate is better to other metallic salts the S.D of K/S values for copper sulphate in simultaneous method is 0.2112 and for pre-mordant method the S.D is 0.1132.