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

Effect of aging on the conductivity of polyaniline doped with phosphoric ac id diesters, and its blends with nonconductive polymers is the subject of t his study. Conductivity of polyaniline doped with bis(2-ethylhexyl) phospha te increases about one order of magnitude during first year of aging in amb ient conditions, and then decreases one to two orders of magnitude after si x years. Similarly, increase of conductivity upon two-year aging is observe d in cellulose acetate blends containing polyaniline doped with phenylphosp honic acid. Six-year aged poly(methyl methacrylate) blends with bis(2-ethyl hexyl) phosphate doped polyaniline were also investigated.