Studies on Removal of Blood Protein Stains from Fabrics. Part 2 : Solubility of Blood Protein on the Fabrics Artificially Soiled with Bovine Blood

Abstract

As a fundamental study on the removal of blood protein stain from fabrics, the amount of the blood protein stained on the various fabrics, the solubility of these stains into water, the influence of temperature and pH on the solubility were studied using the fabrics artificially soiled with bovine blood by the dipping method. The amount of the blood protein stained on the fabrics increased in proportion to the concentration of the blood protein and was more on hydrophobic fabrics than on hydrophilic ones. At the same protein concentration, the amount of the blood serum protein stained on fabrics was more than that of the whole blood protein. As to the solubility into water of the blood protein stained on the fabric, the blood protein stained on to a fabric in a state of film forming was difficult to be dissolved, while that stained on the fabrics as muhi-layers was easily dispersed. The blood protein stains were easily solubilized from silk-habutae, nylon and polyester muslin, while it was difficult to be solubilized from cotton calico and acryl muslin. The solubility into water of the blood protein stains markedly decreased at 80�C and showed the minimum at pH of isoelectric point of the blood protein. © 1984, The Japan Research Association for Textile End-Uses. All rights reserved.