Studies on the Detergency Characteristics of Free Fatty Acid in Oily Soil (Part II. Detergency of Particulate Soil)

오염중의 유리지방산이 세척성에 미치는 영향 제2보 고형오염의 세척성

The effect of free fatty acid in fatty soil on the detergency of particulate soil was investigated. Cotton lawn fabric was soiled with the mixture of polmitic acid, hydrogenated fat, paraffin oil and iron oxide black altering the contents of palmitic acid and was laundered with different sur-fastants under various temperature and alkalinity. The rate of soil removal was estimated by means of the spectoometic analysis of iron on the fabric before and after washing. The results of dergency were compared those obtained by reflactance and K/S value from Kubelka-Munk equation which were derived from reflactance measurements.