Increasing the dielectric breakdown strength of poly(ethylene terephthalate) films using a coated polyaniline layer

Details Increasing the dielectric breakdown strength of poly(ethylene terephthalate) films using a coated polyaniline layer Increasing the dielectric breakdown strength of poly(ethylene terephthalate) films using a coated polyaniline layer

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jphd...36.1414j&link_type=abstract

Journal of Physics D: Applied Physics, Volume 36, Issue 12, pp. 1414-1417 (2003).

Physics

4

Scientific paper

The dielectric strength of films made from poly(ethylene terephthalate) (PET) coated with a thin layer of polyaniline (PANI) was studied. The PANI layer was deposited on the PET films by the `in situ' chemical polymerization method. The PANI layer of the PANI/PET films was undoped in NH4OH 0.1 M solution and re-doped with aqueous HCl solution under different pH values varying from 1 to 10. Electric breakdown measurements were performed by applying a voltage ramp and the results showed a dependence of the dielectric strength on the pH of the doping solution due to the changes in the electrical conductivity of the PANI layer. The dielectric strength of PET/PANI films treated under higher pH conditions showed an electric strength about 30% larger than the PET films, since it leads to a non-conductive PANI layer.

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