Synthesis and characterization of soluble polypyrrole with improved electrical conductivity

Abstract

Polypyrroles doped with two dopants were prepared by chemical polymerization in aqueous solutions of pyrrole monomer. The solutions contained dodecylbenzenesulfonic acid (DBSA) as a dopant, tetraethylammonium tetrafluoroborate (TEABF 4 ) as a codopant, and ammonium persulfate (APS) as an oxidant. The PPy composites [polypyrrole-dodecylbenzenesulfonates (PPy-DBS) codoped with tetrafluoroborate (BF 4 Ϫ )-PPy-DBS-BF] were soluble in m-cresol, NMP, and conditionally soluble in chloroform. Cyclic voltammetry was measured to know the electrochemical property of PPy-DBS-BF. The maximum electrical conductivity of room temperature for PPy-DBS-BF is 1.18 s/cm, which is greatly higher than that of polypyrrole doped with DBS Ϫ (0.04 s/cm). The composition and structural characterization of PPy-DBS-BF were inferred from elemental analysis, nuclear magnetic resonance, and Fourier transform infrared spectroscopy. Scanning electron microscopy was performed to know the morphology of PPy-DBS-BF. The results of UV-Vis spectra and electron spin resonance measurements showed that polaron and bipolaron existed as charge carrier of soluble PPy-DBS-BF. From the temperature dependence of the electrical conductivity, it was suggested that possible conduction mechanism for soluble PPy-DBS-BF should be hopping conduction.

Friction and Wear of Polymer Composites Filled by Nano-Particles: A Review

“…A nonreactive modifier reduces the interaction between the filler particles within agglomerates by reducing the physical attraction rather than by any chemical reaction [47,48].…”

A structural and morphological comparative study between chemically synthesized and photopolymerized poly(pyrrole)

“…This was found to cause poly(pyrrole) to be soluble in m-cresol, NMP, and chloroform depending on the conditions. 18 Soluble poly(pyrrole) was also prepared by functionalizing poly(pyrrole) with functional substituents via the insertion of chlorosulfonyl and sulfonic acid groups. 19 Colloidal particles of poly(pyrrole) were prepared via microemulsion-polymerization using several emulsifiers by Moon et al to understand the relationship between the morphology and photoluminescence (PL).…”

Fabrication of Nanofibers Reinforced Polymer Microstructures Using Femtosecond Laser Material Processing

“…Magnetic neodymium-iron-boron (NdFeB)nanofibers and nanoparticles, have become one of the hotspots in the research field of magnetic materials to meet the demand for miniaturization of electronic components in recent years, and have been successfully prepared by various routes like the sol-gel auto-combustion method [173], co-precipitation [174], hy- Relative conductivity Mean particle size drothermal method [175], reverse micelles [ 176], microemulsion method [177], alternate sputtering [178], pulsed laser deposition [179], and so on. However, until now there have been no reports on the synthesis and magnetic properties of NdFeB ferrite nanofibers in literatures.…”