Journal
CHEMISTRY OF MATERIALS
Volume 20, Issue 7, Pages 2574-2582Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm800005r
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Conductive composite foams were prepared by exposing iodine-loaded polyurethane (PU) foams to pyrrole vapor. The kinetics, equilibrium, and mechanism of the in situ polymerization of pyrrole by iodine within a PU foam was investigated. The dopant for the polypyrrole (PPy) was primarily I-3(-), which formed a charge-transfer complex (PPy-I-2) with the amine group of the PPy. The conductivity of the composite foams increased with increasing concentration of the PPY-I-2 complex and depended on the distribution of the PPY-I-2 complex in the PU matrix and the concentration ratio of PPy and iodine. The chemical structure, morphology, mechanical properties, and thermal stability of the composite foams were also characterized.
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