Thermal analysis of conducting polymers. Part 3. Isothermal thermogravimetry of doped and pristine polyaniline
作者： H.S.O. Chan , L.M. Gan , T.S.A. Hor , S.H. Seow , L.H. Zhang
DOI: 10.1016/0040-6031(93)85084-M
关键词: Activation energy 、 Differential scanning calorimetry 、 Isothermal process 、 Polyaniline 、 Arrhenius equation 、 Thermogravimetry 、 Conductive polymer 、 Polymer chemistry 、 Chemical engineering 、 Materials science 、 Thermal analysis
摘要: Abstract A study of the thermooxidative decomposition electroactive polyanilines (PANI) has been carried out using isothermal thermogravimetry (TG). At low temperatures process is governed by first-order kinetics, while at higher controlled a one-dimensional diffusion mechanism. This attributed to changes in sample geometry, viscosity, and secondary cross-linking reactions structural rearrangement high which make it more difficult for volatile fragments diffuse surface polymer matrix. The activation energy ΔE values expulsion free water/HCl dopant HCl have determined from Arrhenius plots are good agreement with those obtained previously differential scanning calorimetry (DSC).
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