Physicochemical and morphological properties of poly(aniline-co-pyrrole) |
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| Authors: | Sipho E. Mavundla Gerald F. Malgas David E. Motaung Emmanuel I. Iwuoha |
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| Affiliation: | (1) National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, P.O. Box 395, Pretoria, 0001, South Africa;(2) Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa;(3) Department of Physics, University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa; |
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| Abstract: | Copolymers of aniline and pyrrole have been prepared by chemical oxidative-polymerization of aniline and pyrrole using ammonium per sulphate and ferric chloride as oxidants. The structural and morphological properties were studied by X-ray diffraction and scanning electron microscopy. Both copolymers showed an amorphous behaviour compared to their homopolymers. SEM micrographs of poly(aniline–pyrrole) copolymer showed agglomerated spherical structures where as poly(2,5-dimethoxyaniline-pyrrole) showed disordered structures of spherical agglomerates. The copolymers showed improved UV–Vis absorption with the broad peak from 450 to 850 nm. The copolymers exhibited a lower conductivity compared to the homopolymers due to the unsuccessful complex between PANI and PPy, induced by the use of APS as the oxidant. |
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