Abstract
Conducting nanocomposites of polyacrylonitrile (PAN) with acetylene black (AB) were prepared via K2CrO4–NaAsO2 initiated redox polymerization of acrylonitrile in presence of AB suspension in aqueous-methanol medium at 60 °C. Prolonged extraction of PAN–AB composite by DMF failed to extract the loaded polyacrylonitrile completely from the acetylene black, as confirmed by FT IR studies. SEM analyses revealed the formation of agglomerates of particles of nonuniform sizes and shapes. TEM analysis indicated that average particle diameters of the PAN–AB composite were in the range of 120–250 nm. Thermal stability of the PAN–AB composite was appreciably improved relative to that for the unmodified base polymer. The dc conductivity of the PAN–AB composite was in the range of 10−4–10−2 S/cm depending on the amount of AB in the PAN–AB composite, a value remarkably improved relative to that of the PAN homopolymer (>10−11 S/cm).
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Maity, A., Biswas, M. Preparation and Some Properties of a Nanocomposite of Polyacrylonitrile with Acetylene Black. Polym J 36, 812–816 (2004). https://doi.org/10.1295/polymj.36.812
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DOI: https://doi.org/10.1295/polymj.36.812
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