Electrically conducting organic films and beads based on conducting latex particles

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Abstract
Electrically conducting films have been prepared by casting aqueous dispersions of mixed polymer lattices on supporting glass microscope slides; one of the lattices is conducting (polypyrrole or polyaniline) and the other film-forming (a 1:1 co-polymer of polymethylmethacrylate and polybutylacrylate). The polypyrrole particles, being roughly spherical in shape, give a percolation threshold where the conductivity rises sharply at a weight fraction of about 20%, whereas the polyaniline particles, being needle-shaped, have a much lower percolation threshold at about 5%. In addition, the preparation of composite beads, having a non-conducting polymer core (e.g. polymethylmethacrylate) and a conducting shell (polypyrrole), has been carried out.

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