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Structural and Electrical Properties of Poly(ethylene Oxide)-cadmium Sulphate Complexes by N.M. Zain; A.K. Arof is a Materials Science article available to read on EtoBox.

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Solid complexes of poly(ethylene oxide), PEO and 3CdSO 4 .8H 2 O varying from 0 to 25 wt% corresponding to solubility limit Cd 2 + /EO =0 to 0.019 were prepared by the solution cast technique. X-ray diffraction (XRD) technique shows the presence of a new crystalline phase at Cd 2 + /EO\0.009. Two new peaks are observed at 2q: 16°and 27°which is not attributable to PEO or 3CdSO 4 .8H 2 O. These peaks increase in intensity and are accompanied by other peaks as indicated in the diffractograms for samples with higher doping concentration. At low salt concentrations Cd 2 + /EOB 0.009, X-ray diffraction infers the disruption of the crystalline order of the PEO and their conversion to the amorphous state. The cations Cd 2 + and anions [SO 4 ] 2 -are therefore dispersed in the amorphous phase of the PEO. The increase in salt concentration in the low salt regime (Cd 2 + /EO B 0.009) increases the amorphous nature of the PEO. This is verified by the variation of the coherent or Scherrer length with Cd 2 + /EO ratio and implies that the highest conducting film is the least crystalline in nature. Absorption spectroscopy shows the occurrence of polymer-salt complexation which involves an intera

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Author

N.M. Zain; A.K. Arof

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd; Elsevier BV (ISSN 0921-5107)

Published

1998

Language

EN

Field

Materials Science (Physical Sciences)