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Synthesis and Characterization of Conductive Polypyrrole/Montmorillonite Nanocomposites via One‐pot Emulsion Polymerization
Author(s) -
Peighambardoust S. J.,
Pourabbas Behzad
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750112
Subject(s) - polypyrrole , materials science , nanocomposite , montmorillonite , emulsion polymerization , polymerization , chemical engineering , monomer , emulsion , thermal decomposition , conductive polymer , polymer chemistry , composite material , polymer , organic chemistry , chemistry , engineering
Abstract A series of electrically conductive polypyrrole/clay nanocomposites were synthesized in this work by using one‐pot emulsion oxidative polymerization of pyrrole in the presence of unmodified clay and using DBSNa as the surfactant. The effect of surfactant on the morphological and electrical properties of PPy also were investigated and discussed in some extent. Electrical conductivity of the samples was measured by using samples in which the conductive materials was sandwiched between two Ni electrodes at room temperature. PPy/MMT nanocomposites were characterized by using XRD, TEM, TGA and DSC means of investigation. Intercalated structures were determined for the nanocomposites as confirmed by XRD and TEM studies. Electrical conductivity of the nanocomposites was measured to be dependent to the clay content, and the methods of preparation. Measurement also showed that polymerization of pyrrole monomers pre‐intercalated between the clay gallery spaces of the clay led to higher conductivity for the nanocomposite in the same level of clay content. Thermal property measurements showed a lower thermal decomposition rate for the PPy/MMT nanocomposites with respect to the PPy.