A series of enthalpy relaxation experiments at different aging temperatures was conducted on a sample of poly(vinyl methyl ether) using a differential scanning calorimeter. The excess enthalpy was found to decay with aging time according to a previously determined empirical three-parameter model. The temperature dependence of thé three aging parameters pertaining to this model was established. The data were also analyzed by using the single effective relaxation time model of Petrie and Marshall. A comparison was made between these two models. © 1989 American Chemical Society.
|Number of pages||6|
|Publication status||Published - 1989|