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Type: Artigo de periódico
Title: High yield preparation of a soluble polyaniline derivative
Author: Gazotti, WA
DePaoli, MA
Abstract: The effect of pH, temperature, monomer/oxidant molar ratio, catalysts and ionic strength on the reaction yield and electrical conductivity of chemically synthesized poly(o-methoxyaniline) was studied. Based on this, poly(o-methoxyaniline) was prepared in the presence of p-toluene-sulfonic, dodecyl-benzene-sulfonic and dodecylsulfuric acids. Poly(o-methoxyaniline) was obtained with 90% yield and a conductivity of 0.1 S cm(-1) when p-toluene-sulfonic acid was used. The use of functionalized acids increased the thermal stability of the polymer in relation to HCI with no changes in the electric conductivity. The polymer is soluble in common organic solvents, enabling the preparation of films by casting. We also discuss the polymerization kinetics of o-methoxyaniline in the presence of HCI and of the functionalized acids as a function of monomer/oxidant ratio.
Subject: polyaniline
Country: Suíça
Editor: Elsevier Science Sa Lausanne
Citation: Synthetic Metals. Elsevier Science Sa Lausanne, v. 80, n. 3, n. 263, n. 269, 1996.
Rights: fechado
Identifier DOI: 10.1016/0379-6779(96)80212-8
Date Issue: 1996
Appears in Collections:Unicamp - Artigos e Outros Documentos

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