Synthesis and characterization of epoxidized polybutadiene/polyaniline graft conducting copolymer

Abstract

In this article the synthesis and characterization of an elastomeric conducting material, obtained by grafting polyaniline (EB) on commercial cis-1,4-polybutadiene (PB), are described. PB was first partially epoxidized in chloroform solution using meta-chloroperbenzoic acid (MCPBA). The conducting polymer was then grafted to the activated polybutadiene (EPB) via the aminolysis reaction between the polyaniline NH 2 terminal groups and the oxirane rings. The material so obtained (EPBPAN) and the epoxidized intermediate product were characterized by 1H NMR, 13C NMR, Fourier transform infrared, and ultraviolet-visible spectroscopy, thermal and mechanical analysis, and electrical conductivity measurements. The effect of the sample deformation on conductivity also was analyzed. The HCl doping of the EPBPAN film induced crosslinking reactions, generated by the acid cleavage of unreacted oxirane groups. The electrical conductivity of the doped material reached values of about 10 -5 ω -1 cm -1. The key characteristics of our elastomeric conducting material are its simple synthesis, its starting as a commercial product, and the solubility of its undoped form in a common low-boiling organic solvent like chloroform. © 2004 Wiley Periodicals, Inc

Preparation and characterization of an aromatic polyester/polyaniline composite and its improved counterpart

“…The slight decrease in tensile strength observed when the PANI content was above 9 wt% was attributed to the inevitable aggregation of PANI at higher PANI contents and is similar to the deterioration in other properties observed when PANI content was above 9 wt%. Together, these results support theoretical and molecular simulation predictions that stress transfer, and hence strength, of powder-polymer composites can be effectively increased by the formation of chemical bonds between the components [28][29][30].…”

Copolymerization of 1,3-butadiene with phenyl/phenethyl substituted 1,3-butadienes: a direct strategy to access pendant phenyl functionalized polydienes

“…Despite colossal advances in the functionalization of polybutadienes in the past few decades, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] very few of them are concerned about pendant phenyl functionality. Theoretically, there are two possible approaches to access the pendant phenyl functionalized polybutadienes; one is the post-modication process by reacting readily available polybutadienes with phenyl derivatives, and the other is the direct process by copolymerization of 1,3-butadiene (BD) with phenyl substituted 1,3butadiene (PSBD) derivatives.…”

Synthesis of poly(aniline-co-o-toluidine) nanocolloidal particles in aqueous poly(styrene sulfonic acid) by dispersion polymerization method

“…Among the promising conducting polymers, polyaniline (PANI) has received great attention from researchers in the last decade because of easy synthesis, environmental stability, high conductivity, low cost, complex structure and special proton doping mechanism. The physical properties of conducting polymers have been controlled by oxidation and protonation elements as well [2][3][4][5]. The PANI has numerous applications that include organic lightweight batteries, microelectronic devices, electrochromic displays, electromagnetic shielding devices and sensors [6][7][8][9][10][11][12].…”