Abstract
The dynamic modulus of the polyester film in the several concentrations of phenol solution was measured in the temperature range of 0 to 90°C at the equilibrium condition.
The moduli of polyester films in the several concentrations of phenol solution were found to decrease as the concentration of phenol increases, at the same time, the apparent glass transition temperature (Tg), determined from the peak temperature of E″ curve, was also observed to shift to low temperature. The dynamic modulus of amorphous region (EA′) could be separated from that of crystalline region applying the theory of mixed bicomponents polymer system. The linear relationship between log EA′ and concentration of sorbed phenol was induced in the temperature range above Tg.
