Abstract
Detergency is usually evaluated by measuring the reflectance of the soiled cloth before and after the washing procedures. However, the detergency determined by the above mentioned method doesnot always correspond to the removability of soil, but is called “apparent detergency” by the authors.
In this paper, studies were made on the relation between “apparent detergency” and the removability of the soil component contained in the artificially soiled cloths.
1) Logarithm of “apparent detergency” was prorortianal to soil removal in various washing conditions.
2) Organic components were removed easier than inorganic components. Choresterol stearate was the easiest component to be removed among the organic components tested. Paraffin and squarene were removed in a less degree.
3) Fatty acids and triglycerides were removed in different way with different washing solution. Fatty acids were easily removed in aqueous solution of sodium tripolyphosphate.
