Abstract
We have modified the thermally stimulated depolarization current (TSDC) theory so that it contains the relaxation obeying the Vogel‐Tammann‐Fulcher relaxation model. Thermal sampling (TS) technique was used to decompose the complex TSDC spectrum to a number of elementrary peaks. Numerical method is applied for the analysis of TS spectra for the amorphous polar poly(vinyl chloride‐co‐vinyl acetate‐co‐2‐hydroxypropyl acrylate) (PHHV); poly(methyl methacrylate) (PMMA), and poly(vinyl chloride) (PVC). The characteristic alpha‐relaxation peak parameters, namely the pre‐exponential factor (τ0) and its related Vogel‐Tammann‐Fulcher (VTF) energy (EVTF), for each thermal windowing (TW) experiment were determined. The almost temperature independence of the peak parameters suggests that this behavior is a result of segmental dipole relaxation, and consequently, there is no distribution in both peak parameters.
Published Version
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