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Oxidative stability of polyaniline
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SYSNO ASEP 0376674 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Oxidative stability of polyaniline Author(s) Stejskal, Jaroslav (UMCH-V) RID, ORCID, SAI
Exnerová, Milena (UMCH-V) RID
Morávková, Zuzana (UMCH-V) RID, ORCID
Trchová, Miroslava (UMCH-V) RID, ORCID
Hromádková, Jiřina (UMCH-V) RID
Prokeš, J. (CZ)Source Title Polymer Degradation and Stability. - : Elsevier - ISSN 0141-3910
Roč. 97, č. 6 (2012), s. 1026-1033Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords polyaniline ; nanotubes ; oxidation stability Subject RIV BK - Fluid Dynamics R&D Projects GA202/09/1626 GA ČR - Czech Science Foundation (CSF) GAP205/12/0911 GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 CEZ AV0Z40500505 - UMCH-V (2005-2011) UT WOS 000304641300026 DOI 10.1016/j.polymdegradstab.2012.03.006 Annotation Standard globular and nanotubular polyaniline were exposed to strong oxidants, such as hydrogen peroxide or ammonium peroxydisulfate, in acidic, neutral, and alkaline aqueous media for 10 or 60 days. Even in the mixture of 30% hydrogen peroxide and concentrated sulfuric acid, polyaniline was not completely destroyed and left >30 wt.% residue. In 1 m ammonium peroxydisulfate dissolved in various media, only marginal changes in mass of polyaniline were observed, except for concentrated sulfuric acid where the residue was ≈10 wt.%. A partial dissolution of globular polyaniline in acid was responsible for this result. The changes in the molecular structure have been assessed by UV–visible, FTIR, and Raman spectroscopies. The oxidation stability of nanotubular polyaniline was better compared with the common globular form. After the exposure to oxidants in acidic media, the conductivity was reduced but not completely. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2013
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