Kinetic Study of Adsorption of Oil-proof Agent on the Fiber Surface

Adsorption of oil-proof agent(OPA)on cellulose fibers surface was investigated through an UV-Vis spectrophotometer on-line detector system by measuring its decrement in the solution.From a calibration curve the spectrum can be translated to chemical concentration in solution and the amount of OPA adsorbed on to the fiber surface,and then the total amount of OPA on fiber and in solution can be found.With this method the adsorption behavior of oil proof agent on fiber surface was studied,its adsorption kinetics equation and the values of parameter k′a and parameterΓs∞ were derived.The model and method can provide help for the better application of wet-end chemistry in paper making.