Improvement of the color fastness properties onto bleached sulfonated jute with direct dyes

Abstract

Jute fiber has been sulfonated with sodium sulfite in presence of ethylenediamine and bleached with hydrogen peroxide. Bleached sulfonated jute has been dyed with direct dyes (e.g. Direct Yellow 29, Direct Yellow 9, Direct Red 28 and Direct Orange 31). The light and wash fastness, multifabric staining, and breaking strength of dyed bleached sulfonated jute has been studied and compared with that of dyed bleached raw jute. Sulfonation significantly improves light and wash fastness, less staining. On exposure to UV light loss in breaking strength of dyed bleached sulfonated jute with Direct Orange 31 is minimum in comparison with other dyes.