“…polyvinyl chloride, styrenemethyl methacrylate copolymer, Fe-doped polyvinyl acetate, and polystyrenesulfonic acid and other films, were studied by the TSDC and other relaxation techniques [261][262][263][264][265][266][267][268]. The TSDC spectra of poly(vinyl pyrrolidone) (40 kDa) films (thickness 17.6 μm, dried in vacuum for 48 h) were studied as a function of polarising field strength (F p = 0.114-2.272 MV/m) and polarising temperature T p = 305, 317 and 323 K at a constant heating rate b = 0.14 K/s [261].…”