KINETICALLY AND AGGREGATIVELY UNSTABLE OIL DISPERSE SYSTEMS

An analysis is made of kinetically and aggregatively unstable non-Newtonian oil disperse systems and of the reasons for the occurrence of this instability that are associated with the coalescence of droplets and their settlement. In this connection, the authors have proposed models of thinning and rupture of the interphase non-Newtonian fi lm between two joined droplets, and also the model of change in the thickness of the interphase fi lm. The Ostwald–de Waele model satisfactorily describing pseudoplastic properties of oil was taken as the basis for the investigation. A model of settlement of particles in a non-Newtonian oil was proposed. The proposed models were compared with the existing experimental data, which has shown their effi ciency. Consideration has been given to the conditions of self-organization of aggregatively and kinetically unstable disperse systems. It has been noted that such systems, in the case of infi nite time, have no hereditary memory
   
Author:  G. I. Kelbaliyev, D. B. Tagiyev, M. R. Manafov, F. R. Shykhyeva
Keywords:  aggregative and kinetic instability, disperse systems, coalescence of droplets, non-Newtonian oil, sedimentation of particles, self-organization, hereditary memory
Page:  660