Effect of hydration on the dynamics of polymeric cation exchangers and polymeric sorbent inferred from the Rayleigh scattering of Mossbauer radiation

Dependences of the dynamics of hydrophilic polymeric nets of acrylate catio n exchanger, sulfonated poly(styrenedivinylbenzene) cation exchanger, and h ydrophobic poly(divinylbenzeneethylstyrene) sorbent on the degree of hydrat ion were studied by the Rayleigh scattering of Mossbauer radiation (RSMR). Dependences of the integral elastic fraction of RSMR of the polymer-water s ystems on the water/polymer mass ratio were determined. In the case of the cation exchangers, a considerable decrease in the elastic fraction of RSMR of the polymer during hydration was established. A considerable increase in the mobility of the nets indicates their transition from a glassy state to an elastic state. It was established that the intramolecular mobility of t he hydrophobic polymeric sorbent remains unchanged during its hydration, an d it contains water clusters with the nonzero elastic fraction of RSMR in i ts finest pores.