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The paper reports a rapid formation of nanosized polyaniline membranes on the surface‐modified glass substrates during dispersion polymerization of aniline. Poly(N‐vinylpyrrolidone) (PVP) was used to prevent the formation of the large agglomerates of polyaniline and then improve the smoothness of the membranes. Octa decyltrichlorosilane(OTS) changed the surface of the glass substrate from hydrophilic to hydrophobic, accelerating the deposition of polyaniline and enhancing the thickness of the membrane. FT‐IR results proved the doped emeraldine oxidation state of the polyaniline membranes. The prepared nanosized membranes had the conductivity exceeding 10° S · cm-1. The high conductivity and the integrity of membranes render them potential applications in microelectronics, photoelectronics and gas separation. [ABSTRACT FROM AUTHOR]

HCl-doped polyaniline nanofibers having a long nanosize fibril structure were prepared by an inverse microemulsion polymerization process using nanosize Ni particles as inorganic template. Powders of the polyaniline nanofibers were pressed to pellets in thickness of about 0.3 mm and in diameter of 13 mm. Micromorphology and conductive property of the pellets were studied by using scanning electron microscopy as well as by measuring the conductivity at room temperature and the variation of conductivity with temperature in 80–290 K. The pellets consist of granular particles and nanofibers. An array direction of the polyaniline nanofibers in the pellet is random. The conductivity of the pellets at room temperature is 0.55 ± 0.03 S/cm. The variation of conductivity with temperature reveals that the conductive mechanism can be considered to be three-dimensional variable-range-hopping (3D-VRH). [Copyright &y& Elsevier]