KINETICS OF SORPTION PROCESSES IN THE COURSE OF POLYMER COMPOSITE FORMATION

The important mechanism of interface layer formation in polymer compos ite materials is a sorption interaction between polymer fillers and bi nder components. The structure and properties of the interface layer w ill be dependent on the kinetics of the sorption. The kinetics of diff usion of some low molecular compounds including epoxies into aramide f ibers are studied by the method of isothermic calorimetry. Discrepancy of the kinetics from Fickian was found. Theoretical consideration sho wed the cause of it could be the structural inhomogeneity of the sorbe nts. Experimental and theoretical data evidencing that the heterogeneo us structure of the sorbent is the cause of the time dependence of the diffusion coefficient are presented in this paper.