Effects of Thermal Aging on Leucoemeraldine Form of Polyaniline

Electrical and chemical structures of “leucoemeraldine base” form of polyaniline aged thermally in air have been studied by UV-V and IR spectroscopies. The results show that the formation of relatively shorter quinon-diimine blocks can be induced in polyaniline molecules by thermal aging up to about...

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Bibliographic Details
Published in:KOBUNSHI RONBUNSHU 1997/07/25, Vol.54(7), pp.451-454
Main Authors: TSUBAKIHARA, Hiroshi, MURAKAMI, Kohji
Format: Article
Language:Japanese
Subjects:
Leucoemeraldine Base
Polyaniline
Spectroscopy
Thermal Aging
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Summary:Electrical and chemical structures of “leucoemeraldine base” form of polyaniline aged thermally in air have been studied by UV-V and IR spectroscopies. The results show that the formation of relatively shorter quinon-diimine blocks can be induced in polyaniline molecules by thermal aging up to about 190°C. In higher temperature aging, the decrease in free standing imine-nitrogen and the increase in deactivated imine-nitrogen resulting from some kinds of crosslinkings should increase the difficulty of the protonation reaction by dipping in sulfuric acid solution.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.54.451