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Electro‐ and photoconductive properties of the PVA/PAN‐I 2 blends
Author(s) -
Soares Demétrio A.W.,
de Queiroz Alvaro A.A.
Publication year - 2001
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200106)170:1<221::aid-masy221>3.0.co;2-i
Subject(s) - polyaniline , materials science , photoconductivity , doping , electrical resistivity and conductivity , conductivity , fourier transform infrared spectroscopy , polymer chemistry , analytical chemistry (journal) , chemical engineering , composite material , chemistry , polymer , optoelectronics , organic chemistry , polymerization , electrical engineering , engineering
The electrical conductivity of poly(vinylalcohol)/polyaniline‐iodine blend (PVA/PAN‐I 2 ) prepared by solution process was investigated. The FTIR spectroscopy revealed a structural change of both shape and intensity of the polyaniline (PAN) bands after doping with iodine, indicating the formation of a charge transfer complex. The J‐V curves for pure PAN; PAN‐I 2 and PVA/PAN‐I 2 film obey the ohm law at lower voltages, deviate from the linear response at higher voltages and finally display the breakdown behavior. The PVA/PAN‐I 2 exhibit photoconductivity by UV/visible irradiation as well as oscillations that may be attributed to a nonlinear behavior of the blend.