Conductivity of blends of polyaniline with PMMA and cellulose acetate: aging studies

Effect of aging on the conductivity of polyaniline doped with phosphoric acid diesters, and its blends with nonconductive polymers is the subject of this study. Conductivity of polyaniline doped with bis(2-ethylhexyl) phosphate increases about one order of magnitude during first year of aging in ambient conditions, and then decreases one to two orders of magnitude after six years. Similarly, increase of conductivity upon two-year aging is observed in cellulose acetate blends containing polyaniline doped with phenyiphosphonic acid. Six-year aged poly(methyl methacrylate) blends with bis(2-ethylhexyl) phosphate doped polyaniline were also investigated.