Enhanced microwave synthesis: Fine-tuning of polyaniline polymerization

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dc.contributor.author Gizdavic Nikolaidis, Marija en
dc.contributor.author Jevremovic, M en
dc.contributor.author Stanisavljev, DR en
dc.contributor.author Zujovic, ZD en
dc.date.accessioned 2018-10-14T19:36:20Z en
dc.date.issued 2012 en
dc.identifier.issn 1932-7447 en
dc.identifier.uri http://hdl.handle.net/2292/41239 en
dc.description.abstract A series of energy- and time-efficient enhanced microwave syntheses (EMS) of polyaniline (PANI) have been performed and are discussed herein. The syntheses were performed at different microwave power levels while keeping the reaction system at a constant temperature of 24 ± 1 °C, with the samples extracted after 10 min of reaction. Molecular weights were determined with GPC (gel permeation chromatography) and showed that the molecular weight of the microwave-generated materials depends on applied power: the higher the power level, the greater the molecular weight. The chemical structure was investigated by FTIR and UV–vis spectroscopy, while the morphology was imaged using scanning electron microscopy (SEM). FTIR and UV–vis spectroscopy confirmed the formation of PANI, and SEM indicated the presence of a mixed morphology, with a prevalence of nanofibers with different aspect ratios. The conductivity of the samples (ca. 3–3.5 S cm–1) was found to be relatively independent of microwave power levels. Surface area measurements were carried out using Brunauer–Emmett–Teller (BET) method, with samples synthesized using EMS showing higher surface areas when compared with conventionally synthesized PANI. The fact that molecular weight depends on applied power implies that microwave-enhanced synthesis can be used to fine-tune PANI reaction conditions, directing it toward specific properties. en
dc.publisher American Chemical Society en
dc.relation.ispartofseries Journal of Physical Chemistry C 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. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title Enhanced microwave synthesis: Fine-tuning of polyaniline polymerization en
dc.type Journal Article en
dc.identifier.doi 10.1021/jp2086939 en
pubs.issue 5 en
pubs.begin-page 3235 en
pubs.volume 116 en
dc.rights.holder Copyright: The author en
pubs.author-url http://pubs.acs.org/doi/abs/10.1021/jp2086939 en
pubs.end-page 3241 en
dc.rights.accessrights http://purl.org/eprint/accessRights/RestrictedAccess en
pubs.subtype Article en
pubs.elements-id 326007 en
pubs.org-id Medical and Health Sciences en
pubs.org-id Medical Sciences en
pubs.org-id Molecular Medicine en
pubs.org-id Science en
pubs.org-id Chemistry en
dc.identifier.eissn 1932-7455 en
pubs.record-created-at-source-date 2014-08-15 en

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