Abstract
In an attempt to study the washing mechanism whereby oily dirts are removed from fiber, measurements of the oil-water interfacial tension between eight kinds of oily dirts (liquid paraffin, olive oil, iso-octane, lauryl alcohol, n-hexane, xylene, toluene, and kerosine respectively) and SDS solution, were performed at temperatures of 20° to 50°C by the drop volume method.
It was found that the effects of temperature and SDS concentration on the oil-water interfacial tension are markedly dependent on the kind of oil used.
Hence, a careful investigation of the difference between the real dirts and the model ones should be needed prior to the study of detergency mechanism in the actual washing system.
