Abstract
Bleached shirting (without FBA) was treated in dilute detergent solution containing a FBA of bis-Stilbene series, the amount of FBA in the residual liquor (washing and rinsing) was estimated by applying the cellulose powder method.
Following results were obtained ;
1. So far as the accuracy of the determination of FBA concentration is concerned, cellulose powder extraction method proved to be superior to the ordinary colorimetric determination of residual bath.
2. After washing the bleached shirting with a model detergent containing known concentration of FBA, 30 to 50% of the total FBA in the detergent came out in residual solution without any adsorption to the substrate.
3. In FBA of bis-Stilbene and triazinyl-Stilbene series, the higher the washing temperature and the longer the washing time, the smaller was the effusion ratio into the solution, and both the temperature and time effect to the latter is more notable than the former.
