In situ polymerization and morphology of polypyrrole obtained in water‐soluble polymer templates

Abstract

Several water-soluble polymers were used as templates for the in situ polymerization of pyrrole to determine their effect on the generation of nanosized polypyrrole (PPy) particles. The polymers used include: polyvinyl alcohol (PVA), polyethylene oxide (PEO), poly(vinyl butyral), polystyrene sulfonic acid, poly(ethylene-alt-maleic anhydride) (PEMA), poly(octadecene-alt-maleic anhydride), poly(N-vinyl pyrrolidone), poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate), poly(N-isopropyl acrylamide), poly(ethylene oxide-block-propylene oxide), hydroxypropyl methyl cellulose, and guar gum. The oxidative polymerization of pyrrole was carried out with FeCl 3 as an oxidant. The morphology of PPy particles obtained after drying the resulting aqueous dispersions was examined by optical microscopy, and selected samples were further analyzed

Thermoelectric Properties of Flexible PEDOT:PSS/Polypyrrole/Paper Nanocomposite Films

“…PPy, an organic conducting polymer, has great potential to be used in TE materials, because it has relatively high electrical conductivity after being doped with suitable dopants (~340 S/cm at room temperature [ 6 ]), and low thermal conductivity (~0.15 Wm −1 K −1 at 310 K [ 7 ]). So far, there are mainly three methods for the preparation of PPy, e.g., electrochemical polymerization [ 8 ], in situ polymerization [ 9 , 10 , 11 ], and gas phase polymerization [ 12 ]. For example, Lee et al [ 13 ] fabricated PPy films by an electrochemical polymerization method, after which the electrical conductivity and Seebeck coefficient of the PPy films was ~153 S/cm and ~7.14 μV/K at 300 K, respectively.…”

Hybrid assemblies by pyrrole polymerization on nano graphene oxide platelets

“…In this work, pyrrole polymerization reactions were followed by in situ 1 H NMR spectroscopy to determine the impact of additives on the reaction rate using methods described previously [19,20]. Our objective was to observe the effect of GO, which forms proposed hybrid assemblies, to polymerizations performed in carbon black (CB) and no additive.…”

“…Previously, we reported the electropolymerization of Nsubstituted PPy and its reactions with amino-substituted DNA sequences [18], and the formation of PPy nanospheres by in situ polymerization of pyrrole in water soluble polymer templates [19]. We also investigated the chemical polymerization of pyrrole on polyimide (PI) films in the presence of FeCl 3 as oxidant and dopant resulting in conductive PPy nanospheres that increased the electrical conductivity of the surface of the PI film [20].…”

Novel carboxyl functional spherical electromagnetic polypyrrole nanocomposite polymer particles with good magnetic and conducting properties

“…Polyaniline, polypyrrole (PPy) and polythiophene are examples of conducting polymers that have been intensively studied during the last decade due to their application demand in the electronics industry. Amongst these PPy consisting of a five membered heterocyclic ring offers certain advantages such as high conductivity, simple preparation, all‐weather stability, good mechanical properties, redox properties, high pseudocapacitance and biocompatibility, and by virtue of these unique properties PPy possesses wide application potential in sensors, functional coatings, energy storage, optical devices etc . However, many problems are still encountered with respect to its low processability attributed to strong interactions between the conjugated PPy chains, poor colloidal stability and low solubility in common solvents .…”