The effects of dopant acids on structure and properties of poly(o-methoxyaniline)

Show simple item record Wang, X en Ray, Sudip en Gizdavic-Nikolaidis, M en Easteal, AJ en 2012-07-06T02:05:44Z en 2012 en
dc.identifier.citation Journal of Polymer Science Part A: Polymer Chemistry 50(2):353-361 2012 en
dc.identifier.issn 0887-624X en
dc.identifier.uri en
dc.description.abstract Poly(o-methoxyaniline) (POMA) was chemically synthesized using ammonium persulfate (APS) as oxidant. Methane sulfonic acid (MSA), hydrochloric acid (HCl), and p-toluene sulfonic acid (pTSA) were used as dopants, under the same reaction conditions. For comparison, undoped POMA was also synthesized. The polymer samples were characterized by Fourier transform infrared spectroscopy (FTIR), four-probe conductivity measurement, scanning electron microscopy (SEM), electron spin resonance (ESR), gel permeation chromatography (GPC), and determination of specific surface area. The antioxidant activities of POMA were assessed via reaction with 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical, and the anti-microbial activities were determined as minimum bactericidal concentrations against E. coli 25422 and S. aureus 6838. When doped with relatively strong acids, high yield (above 84%) was achieved, compared to the relatively low yield (45%) when no dopant was present. The conductivity decreased in the order POMA-pTSA > POMA-HCl > POMA-MSA > undoped POMA. A polaron conduction mechanism was supported by FTIR and ESR spectra. The morphology of the polymers was found to be effectively controlled by dopants. All POMA polymers showed strong free radical scavenging ability, which was highly correlated with the specific surface areas of the polymer particles. All the tested samples showed activity against S. aureus 6838, but not at the concentrations tested against E. coli 25422. en
dc.publisher Wiley Periodicals, Inc. en
dc.relation.ispartofseries Journal of Polymer Science Part A: Polymer Chemistry en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. Details obtained from en
dc.rights.uri en
dc.title The effects of dopant acids on structure and properties of poly(o-methoxyaniline) en
dc.type Journal Article en
dc.identifier.doi 10.1002/pola.25039 en
pubs.issue 2 en
pubs.begin-page 353 en
pubs.volume 50 en
dc.rights.holder Copyright: Wiley Periodicals, Inc. en
pubs.end-page 361 en
dc.rights.accessrights en
pubs.subtype Article en
pubs.elements-id 278265 en
dc.identifier.eissn 1099-0518 en
pubs.record-created-at-source-date 2012-01-24 en

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