CONTROL OF ELECTRICAL-PROPERTIES OF POLYANILINE

The electrical and material properties of polyaniline can be controlle d on the molecular level, e.g. by copolymerization of aniline with p-p henylenediamine. Products having a resistivity from 10(0) to 10(9) Ome ga cm can be obtained. On the supramolecular level, polyaniline disper sions comprising submicrometre particles can be used for the preparati on of microstructured composites with water-soluble polymers such as p oly(vinyl alcohol) or poly(N-vinylpyrrolidone). On the macroscopic lev el, the blending of polyaniline with an inorganic salt, ammonium sulph ate, produced materials with a percolation threshold at 2.5 vol% polya niline.