Poly O Methoxyaniline
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Non-isothermal decomposition kinetics of conductive polyaniline and its derivatives
Abstract The non-isothermal decomposition kinetics of conductive polyaniline (PANI) and its derivatives, poly(o-methoxyaniline) (POMA) and poly(o-ethoxyaniline) (POEA), was investigated by thermogravimetric analysis (TGA), under inert and oxidative atmospheres, using Flynn-Wall-Ozawa’s approach to assess the kinetic parameters of the decomposition process
Polímeros. Publicado em: 21/09/2018
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2. Performance Prediction of Microwave Absorbers Based on POMA/Carbon Black Composites in the Frequency Range of 8.2 to 20 GHz
ABSTRACT: This paper presents a comparative study involving experimental and numerical behaviors of radar absorbing materials (RAM), based on conducting composites of poly(o-methoxyaniline) (POMA) and carbon black (CB). Samples of POMA/CB in epoxy resin matrix were prepared. First, these samples were experimentally characterized by electric permittivity and
J. Aerosp. Technol. Manag.. Publicado em: 29/03/2018
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3. Studies of optical, morphological and electrical properties of POMA/PMMA blends, using two different levels of doping with CSA
Poly(o-methoxyaniline) (POMA) was synthesized by oxidative polymerization of the monomer o-methoxyaniline. POMA/poly(methyl methacrylate) (PMMA) blends were produced by dissolving both polymers in chloroform (CHCl3).The amount of camphor sulfonic acid (CSA) used as dopant of POMA was different, providing two methods for preparation of the blends. Solutions w
Polímeros. Publicado em: 14/08/2012
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4. Poly(o-methoxyaniline) modified electrode for detection of lithium ions
This paper reports the use of an electrode modified with poly(o-methoxyaniline) for detecting lithium ions. These ions are present in drugs used for treating bipolar disorder and that requires periodical monitoring of the concentration of lithium in blood serum. Poly(o-methoxyaniline) was obtained electrochemically by cyclic voltammetry on the surface of a g
Química Nova. Publicado em: 2012
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5. Estudos de XRD e SAXS aplicados à Polianilina e à Poli(o-metoxianilina) / XRD and SAXS studies applied to Polyaniline and Poly(o-methoxyaniline)
A Polianilina (PANI) e os polímeros derivados da anilina têm recebido grande atenção devido às suas aplicações tecnológicas. A introdução de grupos funcionais polares e de grupos alquila à cadeia principal da PANI é um artifício para se obter polímeros solúveis em uma maior variedade de solventes orgânicos. A Poli(o-metoxianilina) (POMA) é u
Publicado em: 2011
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6. Caracterização óptica e morfológica de filmes automontados de POMA/PPV
Neste trabalho apresentamos as caracterizações ópticas e morfológicas de filmes LBL (layer by layer) ultrafinos de poli(p-fenileno vinileno) (PPV) e poli(o-methoxianilina) (POMA). Os filmes de PPV foram processados usando o polímero precursor poli (cloreto de xilideno tetrahidrotiofeno) (PTHT) e o sódio dodecilbenzenosulfonado (DBS). Os filmes foram de
Publicado em: 2008
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7. CaracterizaÃÃo Ãptica e morfolÃgica de filmes automontados de POMA/PPV
Neste trabalho apresentamos as caracterizaÃÃes Ãpticas e morfolÃgicas de filmes LBL (layer by layer) ultrafinos de poli(p-fenileno vinileno) (PPV) e poli(o-methoxianilina) (POMA). Os filmes de PPV foram processados usando o polÃmero precursor poli (cloreto de xilideno tetrahidrotiofeno) (PTHT) e o sÃdio dodecilbenzenosulfonado (DBS). Os filmes foram de
Publicado em: 2008
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8. Nanocompósitos eletroativos de poli-o-metoxianilina e polissacarídeos naturais
In this work we take advantage of the polyelectrolyte character of some Brazilian native gums to fabricate electrically conductive, nanostructured films. The gums Sterculia urens, (caraia), Sterculia striata (chicha) or Anadenanthera macrocarpa Benth were assembled in conjunction with poly(o-methoxyaniline) (POMA) in the form of layered nanostructured films
Química Nova. Publicado em: 2007-10
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9. Preparação e caracterização de pentóxido de vanádio mesoporoso e reações de intercalação / Synthesis and characterization of mesoporous vanadium pentoxide and intercalation reaction
Synthesis, characterization of vanadium pentoxide mesoporous and studies of properties of hybrids compound based on vanadium oxide xerogel and vanadium pentoxide mesoporous, intercalated with guest species have been the main of this thesis. The interest in those materials, that present a considerable structural and chemical modification, is due to the possib
Publicado em: 2007
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10. Desenvolvimento de um sistema automatizado para a fabricação de filmes automontados
In this technical note, we describe the construction of a low-cost computer controlled device for layer-by-layer film fabrication. The software allows to control multiple material deposition, washing and drying steps and the time for each operation. To test the device, we produced and characterized self-assembled films of conductive polymers by alternating p
Química Nova. Publicado em: 2004-08
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11. Formação e caracterização óptica de filmes automontados de POMA/PPV
A study is presented of the formation and optical properties of polymeric heterostructures from poly(p-phenylene vinylene) (PPV) and poly(o-methoxyaniline) (POMA) produced via the self-assembly technique. POMA layers were obtained in a non self-limiting process from its emeraldine salt, semiconducting form in HCl solution. Thermal conversion of PPV was perfo
Química Nova. Publicado em: 2003-03
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12. Preparação e caracterização da poli(o-metoxianilina) dopada com acidos funcionalizados e sua utilização em aplicaçõesde interesse tecnologico
Organic conducting polymers present several characteristics, such as: electroactivity, electrochromism and electrical conductivity, which qualify them for using in technological applications. Among these polymers, polyaniline and its derivatives have attracted great interest due to their environmental stability and low cost of preparation. However, the lack
Publicado em: 1998