Characterization of stretchable polypyrrole films prepared by chemical and electrochemical method

초록

Stretchable polypyrrole films using functionalized doping agent, di(2-ethylhexyl) sulfosuccinate sodium salt (NaDEHS), were synthesized by chemical and electrochemical method. Chemically and electrochemically prepared polypyrrole films were stretch-oriented (L/L-0= 1.0similar to2.5) by zone drawing method and the electrical conductivities were measured. As the draw ratio was increased, the electrical conductivities were increased. This result was confirmed by the increase in crystallinity through the incresase in draw ratio. The temperature dependence of electrical conductivity showed that 3D-variable range hopping model (L/L-0 = 1.0 similar to 2.0) and 1D-VRH model (L/L-0 = 2.5) gave the best fit to the data for stretched Ppy-DEHS films.

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