Polyaniline-poly (vinyl alcohol) conducting composite: material with easy processability and novel application potential

The present work reports an easy route for synthesis of polyaniline (PAn) i n stable aqueous solution/dispersion form, using poly(vinyl alcohol) (PVA) as an efficient steric stabilizer. Resulting composite successfully combine s desirable physical properties like mechanical strength, solution processi bility and electrical conductivity of PVA and PAn components. The composite was subjected to versatile characterizations and its different physical pr operties (especially optical, thermal, mechanical and electrical) were expl ored. Free standing films can be obtained from the solutions, which exhibit important microwave shielding property over the X-band. This has enhanced the importance of this material to a large extent. (C) 2001 Elsevier Scienc e B.V. All rights reserved.