Biomimetic Synthesis of a Water Soluble Conducting Molecular Complex of Polyaniline and Lignosulfonate

A new biomimetic route for the synthesis of a conducting molecular complex of polyaniline (Pani) and a natural polyelectrolyte, lignosulfonate (LGS) is presented. A poly(ethylene glycol) modified hematin (PEG−hematin) was used to catalyze the polymerization of aniline in the presence of LGS to form...

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Bibliographic Details
Published in:Biomacromolecules 2002-09, Vol.3 (5), p.937-941
Main Authors: Roy, Sucharita, Fortier, Jacqueline M, Nagarajan, Ramaswamy, Tripathy, Sukant, Kumar, Jayant, Samuelson, Lynne A, Bruno, Ferdinando F
Format: Article
Language:English
Subjects:
Aniline Compounds - chemical synthesis
Aniline Compounds - chemistry
Biodegradation, Environmental
Corrosion
Electric Conductivity
Hemin - chemistry
Lignin - analogs & derivatives
Lignin - chemical synthesis
Lignin - chemistry
Polymers - chemistry
Solubility
Temperature
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Summary:A new biomimetic route for the synthesis of a conducting molecular complex of polyaniline (Pani) and a natural polyelectrolyte, lignosulfonate (LGS) is presented. A poly(ethylene glycol) modified hematin (PEG−hematin) was used to catalyze the polymerization of aniline in the presence of LGS to form a Pani/LGS complex. UV−vis, FTIR, conductivity and TGA studies for the LGS−polyaniline complex indicate the presence of a thermally stable and electrically conductive form of polyaniline. Also the presence of LGS in this complex, an inexpensive byproduct from pulp processing, provides a unique combination of properties such as electronic conductivity, processability and biodegradability. The use of this conductive complex for corrosion protection is also proposed.
ISSN:1525-7797
1526-4602
DOI:10.1021/bm0255138