1997
DOI: 10.1002/(sici)1097-4628(19970118)63:3<343::aid-app9>3.0.co;2-n
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Electrical studies on PVA-PE copolymer

Abstract: SYNOPSISThe electrical transport properties including electrical conductivity ( s), dielectrical constant (e), thermally stimulated depolarization current (TSDC), and pyroelectric coefficient ( P) of a poly(vinyl alcohol)-polyethylene (PVA-PE) copolymer were studied in the temperature range 296-433K. Two stages of behavior have been observed with activation energies 1.49 and 0.05 eV. Discussion of conduction mechanism was carried out in terms of relevant theories. The existence of a relaxation peak in e versus… Show more

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Cited by 13 publications
(5 citation statements)
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“…From Fig. a, the frequency at 3408 cm −1 is due to the stretching vibration of its side hydroxyl groups, 2925 cm −1 is due to CH 2 group stretching vibrations, 1712 cm −1 is due to CO from residual acetate group or oxidation during manufacturing process present in the PVA . Frequency at 1437 cm −1 is attributed to OH, CH bending, or CH 2 deformations.…”
Section: Resultsmentioning
confidence: 96%
“…From Fig. a, the frequency at 3408 cm −1 is due to the stretching vibration of its side hydroxyl groups, 2925 cm −1 is due to CH 2 group stretching vibrations, 1712 cm −1 is due to CO from residual acetate group or oxidation during manufacturing process present in the PVA . Frequency at 1437 cm −1 is attributed to OH, CH bending, or CH 2 deformations.…”
Section: Resultsmentioning
confidence: 96%
“…The energy difference between the impurity level and the valence band (or the conducting band) is confirmed as ∆E. 39,40 The values of E g and ∆E are listed in Figure 12. It is obvious that ∆E is much smaller than E g .…”
Section: Resultsmentioning
confidence: 96%
“…In the lower temperature range, the excited electrons from impurity (donor) levels to the conducting band and electrons from the valence band to impurity (acceptor) levels increase in comparison with the electrons which are host-excited from the valence band to the conducting band. The energy difference between the impurity level and the valence band (or the conducting band) is confirmed as Δ E . , The values of E g and Δ E are listed in Figure . It is obvious that Δ E is much smaller than E g .…”
Section: Resultsmentioning
confidence: 99%
“…The FL dependencies of the intensity of the peaks at 570 cm −1 , which was assigned to CBr vibrating mode,18 and 1339 cm −1 , which was assigned to OH and CH bending,21 are plotted in Figure 7. Each exhibits two minima at x = 1 and 14% and maximum at x = 7.5%, indicating different modes of structural deformation.…”
Section: Resultsmentioning
confidence: 99%