Effect of a Finely Dispersed Filler on the Relaxation Behavior of a Latex Polymer

Resumo

The effect of finely dispersed iron powder on the relaxation behavior of highly elastic acrylate latex polymers was studied by dynamic mechanical relaxation spectroscopy. The introduction of a filler led to a decrease in the intensity of the maximum of dissipative losses of α relaxation and in the modulus defect of the polymer and to dissipative losses of β relaxation. Special attention was paid to relaxation effects at negative temperatures, which showed themselves as local dissipative processes of μ relaxation in the spectra of internal friction and on the temperature dependences of frequency.