Thermal Degradation Studies on Polyaniline–Polypyrrole Copolymers Prepared by Microemulsion Methods

• Published in: International journal of thermophysics Vol. 31; no. 4-5; pp. 1037 - 1050
• Main Authors: Prasannan, A., Somanathan, N., Hong, Po-Da
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.05.2010
• Subjects: Aniline; Classical Mechanics; Condensed Matter Physics; Copolymers; Industrial Chemistry/Chemical Engineering; Microemulsions; Morphology; Nanocomposites; Nanostructure; Physical Chemistry; Physics; Physics and Astronomy; Pyrroles; Thermal degradation; Activation parameter; Microemulsion; Polyaniline–polypyrrole copolymers; Thermal stability
• ISSN: 0195-928X; 1572-9567
• DOI: 10.1007/s10765-010-0723-y

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.