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A series of near or monodisperse styrene-butyl acrylate (SBA) copolymer latex particles with different butyl acrylate contents were coated with polypyrrole. The struc- ture of the SBA/PPy composites was characterized by trans- mission electron microscopy (TEM), scanning electron mi- croscopy (SEM), diffuse reflectance infrared Fourier trans- form spectroscopy (DRIFT), X-ray photoelectron spectros- copy (XPS), differential scanning calorimetry (DSC) and standard four-probe method. The core-shell morphology of the SBA/PPy composite particles was confirmed. The result of DSC showed that Tg of the composite is mainly determined by the core component. The effects of the concentration of polypyrrole, the butyl acrylate content in SBA copolymer and the nature of the counter-anion on the electrical conduc- tivity of compression-moulded samples were studied. It was first found that the electrical conductivity of the samples can be tuned by varying the butyl acrylate content in SBA co- polymer and the highest conductivity of the core-shell com- posite was 0.17 S·cm?1.
A series of near or monodisperse styrene-butyl acrylate (SBA) copolymer latex particles with different butyl acrylate contents were coated with polypyrrole. The strucure of the SBA / PPy composites was characterized by trans-mission electron microscopy (TEM), scanning electron diffuse reflectance infrared Fourier trans-form spectroscopy (DRIFT), X-ray photoelectron spectroscopy (XPS), differential scanning calorimetry (DSC) and standard four-probe method. The core- shell morphology of the SBA / PPy composite particles was confirmed. The results of DSC showed that Tg of the composite is mainly determined by the core component. The effects of the concentration of polypyrrole, the butyl acrylate content in SBA copolymer and the nature of the counter-anion on the electrical conduc- tivity of compression-molded samples were studied. It was first found that the electrical conductivity of the samples can be tuned by varying the butyl acrylate content in SBA co-polymer a nd the highest conductivity of the core-shell com-posite was 0.17 S · cm -1.