Differential scanning calorimetry (DSC) and thermogravimetry were used to investigate polyacrylamide obtained under different conditions and subjected to plastic deformation under a pressure of 0.5–2.0 GPa. On the thermograms there were two endothermic peaks, one of which was associated with the rupture of hydrogen bonds, and the second with thermal imidisation. Plastic deformation led to a reduction in the enthalpies of both peaks. The enthalpies of endothermic processes depended on the presence in the specimens of trapped electrons.
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