Desorption properties of cotton fabric for oil soil

A comparative study was undertaken of desorption process of water soluble arabic gum,castor oil,phosphatide,liquid paraffin,lanolin from the cotton fabric under certain conditions.Quasi-secondary reaction kinetics equation was used to fit desorption curves,and the correlation coefficients were close to 1.The results showed that arabic gum exhibited the best desorption result and the fastest desorption rate in the washing water.On the contrary,lanolin was most difficult to be desorbed,but it had faster desorption rate than other soils.SEM observation showed that almost no arabic gum residue was on the fiber surface after washing;lanolin changed little before and after washing;castor oil was not easy to be adsorbed or easy to be removed;and phosphatide,liquid paraffin,castor oil all displayed certain degree of residues after washing,and were adhered to the fiber surface.Adhesion forces of different soilson the sunface of cotton fiber were different.