Thermoreversible gels of polyaniline: Viscoelastic and electrical properties
The authors demonstrate that polyaniline (PANI) dissolved in dodecyl benzene sulphonic acid (DBSA) shows thermoreversible gelation. The dissolution has been performed in formic acid which allows particle-free complexes according to optical microscopy. Below the gelation temperature the materials are rubber-elastic in compression experiments, the storage modulus G{prime} does not essentially depend on frequency, and the samples are electronically conductive. Above the gelation temperature, G{prime} indicates flow-like behavior and drastically lower ionic conductivity is observed. These results suggest reversible, i.e., fusible, network formation. The properties are compared with gels consisting of camphor sulphonic acid (CSA) doped PANI dissolved in m-cresol which are poorly thermoreversible.
- Research Organization:
- Helsinki Univ. of Technology, Espoo (FI)
- OSTI ID:
- 20034105
- Resource Relation:
- Conference: Electrical, Optical, and Magnetic Properties of Organic Solid-State Materials IV, Boston, MA, (US), 12/01/1997--12/05/1997; Other Information: PBD: 1998; Related Information: In: Electrical, optical, and magnetic properties of organic solid-state materials IV. Materials Research Society, symposium proceedings Volume 488, by Reynolds, J.R.; Jen, A.K.Y.; Rubner, M.F.; Chiang, L.Y.; Dalton, L.R. [eds.], 977 pages.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Elaboration of m-cresol polyamide12/ polyaniline composite films for antistatic applications
NMR evidence for the metallic nature of highly conducting polyaniline