Study of the Kinetics of the Adsorption of Dialdehyde Starch on Cellulose

The kinetics of adsorption of dialdehyde starch water solution on sulphite unbleached and bleached coniferous cellulose were studied. The kinetics of adsorption is described by an exponential kinetic equation applied for energetically uniform heterogeneous surfaces. The energy of activation for unbleached cellulose was in the limits from 10.6–27.6, while those of bleached cellulose were from 12.6–20.0 kJ/mol and were not dependent on the initial concentration of the DAS solution but linearly grow with the increase of the adsorbed DAS amount. The studied process was effected by the entropy factors exerting a defining influence on the initial rate, while the energy ones defined the changing of the rate.