Thermal dynamic processing of polyaniline with dodecylbenzene sulfonic acid

Abstract

ABSTRACT:To attain an intrinsically conductive and processible polymer, polyaniline (PANI)/dodecylbenzene sulfonic acid (DBSA) blends of several compositions were processed at various elevated temperatures in a Brabender plastograph. The blends' temperatures during processing, as affected by the blends' composition and initial process temperature, were monitored. Accordingly, the process includes the following main stages: heating the blend, exothermic PANI-DBSA doping reaction accompanied by a paste to a solidlike transition, and plasticization of the resulting PANI/DBSA complex by the excess DBSA. Composition analysis of the process products sampled at the various stages showed that the initial blends, prior to their thermal processing, already consisted of partially doped PANI particles, having a core/shell structure; the core consists of PANI base and the shell of PANI(DBSA) 0.32 complex. In addition, at the pasteto-solidlike transition, the doping reaction is completed; further mixing does not affect the complex composition, but results in conductivity reduction. The morphology of the blends sampled at the various processing stages was studied by electron microscopy. From the conductivity and processibility point of view, optimal PANI/DBSA blend composition and processing temperature were identified.

Elastomeric composites based on ethylene–propylene–diene monomer rubber and conducting polymer‐modified carbon black

“…3008C, depending on the monomer/oxidant ratio of the polymerization reaction. On the other hand, in relation to studies on the thermal degradation of polyaniline doped with dodecylbenzene sulfonic acid (DBSA), Zilbermann and coworkers [29,30] describes a first weight loss at ca. 1008C corresponding to loss of moisture, solvent, or low molecular weight oligomers and a second loss at ca.…”

Studies on Electrochemical, Optical and Electrical Conductivity of Conducting Composite of o-Anisidine, o-Toluidine and Their Co-polymer

“…However, they are inherently insoluble, infusible and non-processable, due to their strong intermolecular interactions. High-quality conducting blends with conventional polymers by melt mixing [5,6] or by solution casting [7][8][9][10] are still at the development stage.…”

3D printing of conjugated polymers

“…[40][41][42] In this work, the team studied the complexation of dodecylbenzenesulfonic acid (DBSA) with PANI, and how the processing conditions affect final paste rheology and printing. 43 To begin, the team took inspiration from previous work that had described doping of PANI with DBSA under different thermal conditions. 44 Using this work as a starting point, the team formed their inks via mechanical mixing of PANI and DBSA under different temperature/time regimes, and identified the suitable parameters to achieve the desired ink rheology: relatively high initial viscosities (η 0 ) and strong shear thinning.…”