Dept. of Physics, Kakatiya Institute of Technology & Science, Warangal, Andhra Pradesh, India. e-mail: krp_kitsw@yahoo.co.in
Online published on 4 November, 2017.
The thermoluminescence (TL) glow curves of UV irradiated PAAm-PVA polyblend have been studied. The experimental glow curves show the presence of two peaks with glow peak temperatures at 373K and 479K. The values of activation energy and frequency factors are determined by employing computer simulation. Most of the TL glow curves obey non first order kinetics. The results obtained by using TL experimental technique are correlated with the differential scanning calorimetry (DSC) results. The increase in crystalline component with increase in PVA component in the blend has been confirmed by noting the formation of spherulites around an indenter mark on the blend, employing Optical microscopy.
Thermoluminescence, trapping parameters, frequency factors, order of kinetics, polyacrylamide, polyvinyl alcohol, differential scanning calorimetry (DSC), optical microscopy
