ISSN:
0887-624X
Keywords:
pseudo-IPNs
;
electrical DC conductivity
;
iodine-doped poly(4BCMU) in polydimethylsiloxane
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
We have prepared pseudo-IPNs (PIPN) of crosslinked PDMS and linear P4BCMU and characterized them by DSC and SEM. The proposed theory about electrical hopping conduction along the linear chain is supported by the observed electrical conductivity properties of these IPNs of conjugated linear polymers. We also studied the low-temperature (T) DC conductivity of the single-phase PIPN and these showed a change from minus to plus in dσ/dt below 120 K. At 4 K, σ was about seven times larger than at 120 K. This reversal is not shown by the bulk polymers composing these PIPNs and polymer blends of linear conjugated polymer in linear insulating host polymer. We speculate that this may indicate some degree of quantum coherence in σ of the one-dimensional pseudo- PIPNs. © 1993 John Wiley & Sons, Inc.
Additional Material:
10 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pola.1993.080311319
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