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- Golczak, Sebastian, et al.
(författare)
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Degradation of microporous polyaniline film by UV-ozone treatment
- 2009
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Ingår i: POLYMER DEGRADATION AND STABILITY. - : Elsevier BV. - 0141-3910. ; 94:3, s. 350-354
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Tidskriftsartikel (refereegranskat)abstract
- Thin microporous polyaniline films in the emeraldine-base form (PANI-EB) have been prepared electrochemically at a potential of 0.8 V. The effect of ozone treatment on the structural changes of polyaniline thin films has been investigated using X-ray photoelectron spectroscopy, SEM and EPR. Surface analysis showed that oxidation occurs mainly at the carbon atoms, resulting in the formation of C=O and COOH species. The degradation reaction seems to be preferentially directed towards the quinoneimine units. At high extent of carbon oxidation, UV-ozone treatment may involve the direct oxidation of the nitrogen atoms to form -NOx species.
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