Issue 4, 2004

Reductive total chlorine free photochemical bleaching of cellulosic fabrics, an energy conserving process

Abstract

Water-insoluble natural colored compounds adsorbed or chemically bound on cellulosic fabrics were bleached effectively at room temperature by a selective photolysis of the colored compounds using various excimer lasers (ArF, KrF, XeCl, XeF), a low-pressure mercury lamp, and a black-light fluorescent lamp in the presence of aqueous solutions of various reducing reagents. Sodium borohydride gave the best efficiency on the bleaching when KrF, XeCl, XeF excimer lasers or a low-pressure mercury lamp were used as light sources and the efficiency of the bleaching was found to be comparable to that of the conventional thermal bleaching processes.

Graphical abstract: Reductive total chlorine free photochemical bleaching of cellulosic fabrics, an energy conserving process

Supplementary files

Article information

Article type
Paper
Submitted
01 Dec 2003
Accepted
11 Feb 2004
First published
05 Mar 2004

Green Chem., 2004,6, 198-205

Reductive total chlorine free photochemical bleaching of cellulosic fabrics, an energy conserving process

A. Ouchi, T. Obata, T. Oishi, H. Sakai, T. Hayashi, W. Ando and J. Ito, Green Chem., 2004, 6, 198 DOI: 10.1039/B315580C

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