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Anhydrous copper sulfate particles filled styrene‐acrylonitrile copolymer composites were investigated. A strong interfacial interaction between the copper sulfate particles and styrene‐acrylonitrile copolymer matrix formed when the processing temperature was above 200°C, resulting in an increase in viscosity and glass transition temperature. The interfacial interaction was due to a solid state coordination reaction between nitrile groups and metal ions, and resulted in the adherence of styrene‐acrylonitrile copolymer onto the surface of copper sulfate particles. Viscoelastic measurement, thermogravimetric analysis, X‐ray photoelectron spectroscopy, differential scanning calorimetry, scanning electron microscopy and energy‐dispersive X‐ray spectroscopy were used for the characterization of the composite.
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Shen et al. (2007) studied this question.
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