Synthesis and characterization of poly(aniline-co-o-anisidine). A processable conducting copolymer

Pandey, Shyam S.; Annapoorni, S.; Malhotra, Bansi D.

doi:10.1021/ma00064a032

Cited by 137 publications

(72 citation statements)

References 6 publications

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“…To prepare the base form, another portion of the finely ground polymer was suspended in a 0.1M NH 4 OH solution, stirred for 6 h, and filtered. 11,19 The elemental analysis of the obtained polymer base gave C, 41 MSA-doped polymers were prepared by adding 10 -20% MSA to a finely ground emerldine base and stirring for 6 h at room temperature. The deep green resultant polymers were filtered, washed with methanol, and dried in a vacuum for 24 h.…”

Section: Experimental Chemicalsmentioning

confidence: 99%

Synthesis and characterization of electrically conducting copolymer of aniline and o‐bromoaniline using methane sulfonic acid as dopant

Roy

Gupta

Bhowmik

et al. 2002

J of Applied Polymer Sci

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Polyaniline (PAN), poly(o-bromoaniline) (POBA), and poly(aniline-co-o-bromoaniline) (PABA) were synthesized by oxidative coupling. These polymers are protonated by 10 -20% methane sulfonic acid (MSA) and 1M HCl. The new polymer bases have greater solubility than that of PAN in common polar organic solvents; PAN-MSA was observed to be the most thermally stable of these polymers. POBA is associated with residual quinoid diimine units as illustrated in the IR and UV-vis spectra, after reduction with hydrazine dihydrochloride. Both the doping agents cause a downward shift of the quinoid absorption in the IR spectra. MSA-and HCl-doped PAN and PABA polymers exhibit a coil-like conformation in DMSO, whereas only MSA-doped PAN and PABA show an "expanded coillike" conformation in m-cresol with a "free carrier tail" above 800 nm in their electronic spectra. XPS spectra indicated the presence of covalent bromine in the POBA and PABA polymers. Bromine retention was greater in the homopolymer as evidenced by the IR studies after aging at 350°C. Compared to HCl, MSA is found to be a more effective dopant, enhancing the conductivity of the copolymers by 10 2 -10 3 times in magnitude.

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Section: Experimental Chemicalsmentioning

confidence: 99%

Synthesis and characterization of electrically conducting copolymer of aniline and o‐bromoaniline using methane sulfonic acid as dopant

Roy

Gupta

Bhowmik

et al. 2002

J of Applied Polymer Sci

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“…Since most of the conducting polymers are not processable, much of the efforts made in this field have been directed towards circumventing this problem. To solve this problem, various approaches have been tried, including addition of side groups to the polymer backbone [9], grafting of polymers to a non-conducting polymer [10], direct polymerization of intractable polymers into the final desired shape, making a composite of blend of conducting polymers [11] [12] and copolymerization [13]. Better processability may be achieved either by the synthesis on PANI in nano-micro scale particle, which is easier to disperse in a polymer matrix or by using an appropriate emulsifier which enhances the optical and electrical properties of PANI.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Perfluorooctanoic Acid Anionic Surfactant Doped Nanosize Polyaniline

Mahalakshmi¹,

Vedhi²

2014

OJSTA

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Surfactant doped polyaniline was synthesized in the aqueous solution of aniline and anionic surfactant of perfluorooctanoic acid (PFO) by chemical synthesis using potassium peroxy disulphate as an oxidant by varying the aniline to surfactant ratio. The solubility of the chemically prepared surfactant doped polyaniline (PANI) was ascertained and it showed good solubility in dimethyl sulfoxide (DMSO), dimethylformamide (DMF), acetone, acetonitrile, ethanol, aceticacid, trichloroethylene, dichloromethane, tetrahydrofuran, ethylacetate, diethylether, toluene, chloroform and sparingly soluble in n-hexane and water. The prepared polymers were characterized by fourier transform infrared spectroscopy (FTIR), UV-visible, X-ray diffraction (XRD), cyclic voltammetric (CV), EIS and scanning electron microscopy (SEM). The analysis of UV-visible and FTIR showed that aniline has been polymerized to PANI in its conducting emeraldine form. FTIR spectra showed that the peaks at 1670, 3315 and 1400 cm −1 corresponded to PFO. FTIR spectra showed that amine peak observed at 1593 cm −1 was shifted to lower wave number due to the interaction between PANI and the surfactant. SEM analysis showed that the variation in morphology of doped PANI was predominantly dependent on the concentration of the surfactant. Elemental analysis was done by energy dispersive spectroscopic (EDAX) which shows the presence of C, N, O, S and F. XRD pattern showed that the formation of nanosized (18 nm) and crystalline polymer. CV studies of the synthesized polymer exhibited good adherent behavior on electrode surface. It exhibited three oxidation peaks at approximately 0.283 V, 0.541 V and 0.989 V and two reduction peaks at 0.1421 and 0.3854 V. Electrical conductivity of PFO doped PANI was studied by impedance spectroscopic method.

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“…For most miscible polymer blends, the T gthe T g s of PANIS-HCl and PANIS-base from their DSC curves. Pandey et al 13 reported a T g value of 240ЊC for PANIS-base. However, their assignment of the glass transition appears doubtful as it is exothermic rather than endothermic and is complicated by the subsequent exothermic event.…”

Section: Resultsmentioning

confidence: 99%

Miscibility of conductive blends of poly(o-anisidine) with poly(2-alkyl-2-oxazoline)s

Ong¹,

Goh²,

Chan³

1997

J. Appl. Polym. Sci.

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HCl-doped poly( o-anisidine) (PANIS-HCl) and undoped poly( o-anisidine) (PANIS-base) were blended with poly(2-methyl-2-oxazoline) (PMOx) or poly(2-ethyl-2-oxazoline) (PEOx) by solution casting from dimethyl sulfoxide. Blends containing 50 wt % or less of PANIS-HCl or PANIS-base were flexible and homogeneous. The glass transition temperature of the blend continuously shifted away from that of PMOx or PEOx with increasing PANIS-HCl or PANIS-base content, indicating miscibility. The shift in the T g value was larger for the PMOx blend than for the corresponding PEOx blend, suggesting a stronger interpolymer interaction in the former blend. Fourier transform infrared spectroscopic studies indicated the presence of specific interactions in the blends as evidenced by the changes of C|O and NH bands. Blends containing 50 wt % of PANIS-HCl showed conductivity of about 10 04 S/cm.

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Synthesis and characterization of poly(aniline-co-o-anisidine). A processable conducting copolymer

Cited by 137 publications

References 6 publications

Synthesis and characterization of electrically conducting copolymer of aniline and o‐bromoaniline using methane sulfonic acid as dopant

Synthesis and characterization of electrically conducting copolymer of aniline and o‐bromoaniline using methane sulfonic acid as dopant

Synthesis and Characterization of Perfluorooctanoic Acid Anionic Surfactant Doped Nanosize Polyaniline

Miscibility of conductive blends of poly(o-anisidine) with poly(2-alkyl-2-oxazoline)s

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