Electrically anisotropic polyaniline-polyurethane composites

Electrically conducting polyaniline particles were organized by electric fi eld in a liquid medium, and subsequently polymerized into a polyurethane ne twork. The chains of PANI particles oriented in the field became: fixed in the,network. In this way, electrically anisotropic materials were prepared: the conductivity in the direction parallel to the orientation was several times higher than that in the perpendicular one. The conductivity increases and electrical anisotropy reversibly decreases with growing temperature.