Preparation, properties and applications of polypyrroles

Polypyrrole (PPY) is one of the most promising materials for multifunctiona lized applications. Preparation, characterization, properties and applicati ons of PPYs are reviewed in this paper. In addition, the PPY composites are described in detail according to the synthetic methods and their applicati ons. At the same time, effects of various parameters such as doping anions, additives, and oxidant, on the PPY properties are also concerned. The PPY films and membranes used for ion exchange, pervaporation, and gas separatio n are mentioned. In this review, ion exchange membranes are highlighted. Mo reover, the further investigation of PPY composite membranes for oxygen enr ichment is predicted. A total of 117 references are cited. (C) 2001 Elsevie r Science B.V. All rights reserved.