Polyaniline/lignin blends: FTIR, MEV and electrochemical characterization

Blends of polyaniline (emeraldine base) and Eucalyptus grandis kraft lignin were prepared by casting method. The maximum amount of lignin that could be used for blending was 36% (w/w); beyond that, fractile films were produced. The IR spectra of the blends indicated that interactions occurred betwee...

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Bibliographic Details
Published inEuropean polymer journal Vol. 38; no. 11; pp. 2213 - 2217
Main Authors Rodrigues, Paula C, Cantão, Maurı́cio P, Janissek, Paulo, Scarpa, Paulo C.N, Mathias, Alvaro L, Ramos, Luiz P, Gomes, Maria A.B
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.11.2002
Elsevier
Subjects
Applied sciences
Cyclic voltammetry
Electrical, magnetic and optical properties
Exact sciences and technology
FTIR
Kraft lignin
MEV
Organic polymers
Physicochemistry of polymers
Polyaniline
Properties and characterization
Cyclic voltammetry
Polyaniline
FTIR
Kraft lignin
MEV
Intermolecular interaction
Conducting polymers
Solid state
Lignin
Electrochemical properties
Polymer blends
Morphology
Experimental study
Aniline polymer
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Summary:Blends of polyaniline (emeraldine base) and Eucalyptus grandis kraft lignin were prepared by casting method. The maximum amount of lignin that could be used for blending was 36% (w/w); beyond that, fractile films were produced. The IR spectra of the blends indicated that interactions occurred between polyaniline and lignin. Cyclic voltammetry measurements showed peaks that were readily attributed to the oxidation/reduction of polyaniline and a new oxi-reduction peak due to oxidation/reduction of sites created during interaction of two polymers. Scanning electronic microscopy showed that all blends were homogeneous.
ISSN:0014-3057
1873-1945
DOI:10.1016/S0014-3057(02)00114-3