Thermal Degradation Studies on Polyaniline–Polypyrrole Copolymers Prepared by Microemulsion Methods |
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Authors: | A Prasannan N Somanathan Po-Da Hong |
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Affiliation: | 1. Graduate Institute of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan 2. Polymer Laboratory, Central Leather Research Institute, Chennai, 600 020, India
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Abstract: | Solvent- and water-based microemulsions of aniline and pyrrole copolymers were synthesized, and the thermal degradation properties of the copolymers were studied. The morphology of the copolymers prepared using solvent-based microemulsions containing 80 % aniline in the feed showed highly oriented, crystalline, ordered long nano-fibers which were even more structured than that of pure aniline prepared by the same method. The influence of the degree of crystallinity calculated from X-ray diffraction and morphology had an overlap with thermal degradation and activation energies of different transitions. Copolymers prepared with water-based microemulsions were thermally less stable than the ones prepared using solvent-based microemulsions. The concentration of pyrrole and aniline mutually influenced the thermal properties of the copolymers. |
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