5 years ago

Electrospinning and solid state polymerization: A simple and versatile route to conducting PEDOT composite films

Electrospinning and solid state polymerization: A simple and versatile route to conducting PEDOT composite films
Conducting polymer composite films containing poly(3,4-ethylenedioxythiophene) (PEDOT) was prepared by solid state polymerization (SSP) of 2,5-dibromo-3,4-ethylenedioxythiophene (DBEDOT) in the matrices of polystyrene (PS), sulfonated polystyrene (SPS), or poly(methyl methacrylate) (PMMA). A thin fiber mat was first fabricated by electrospinning a mixed solution of the polymer matrix and DBEDOT on glass slides. The SSP of the DBEDOT embedded in the polymer matrix was then induced by heating at 60–80°C, which resulted in a dark blue PEDOT composite film, structurally confirmed by Raman spectroscopy and X-ray diffraction spectroscopy. It was found that compression during heating produced better dispersed PEDOT particles in the polymer matrix. The conductivity of the composite fiber was found to reach as high as approximately 13, 14 and 32S/cm for the PEDOT/PS, PEDOT/SPS and PEDOT/PMMA composite films, respectively. These conductivity values are comparable to that of the pure PEDOT generated directly by SSP in the absence of a polymer matrix.

Publisher URL: www.sciencedirect.com/science

DOI: S0014305717301738

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