Polycarbonate Nanocomposites via Melt Compounding: The Relation between Compatibility and Rheological Properties

Abstract:

The effect of several types of nanoparticles on the rheological properties of polycarbonate (PC) was compared. Four polycarbonate nanocomposites containing 5 wt% of layered silica (SiO₂), Iron oxide (Fe₃O₄), Iron oxide (α-Fe₂O₃), cupric oxide (CuO) nanoparticles were prepared via melt compounding at 260 °C. Compression molded samples were prepared and the dynamic rheological properties of the nanocomposites were investigated. The incorporation of the nanoparticles increased the storage modulus and consequently decreased the damping factor. In the Cole-Cole plot, PC filled layered silica and Fe₂O₃ nanoparticles showed more semi-circle pattern comparing to that of other nanocomposites implied more compatibility between PC and layered silica and also Fe₂O₃ nanofillers. While other nanocomposites showed more deviation from this pattern. Rotational mode in rheological studies showed that at low shear rate the viscosities of nanocomposites are higher than that of pure Polycarbonate. While at higher shear rate the viscosity of filled samples tend to approach the viscosity of pure PC.

• Periodical: Advanced Materials Research (Volume 739)
• Pages: 117-122
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.739.117
• Online since: August 2013
• Authors: Hojjatollah Sadeghipour, Farshid Ghorbani, Mohammad Reza Jafari Felavarjani, Hassan Ebadi-Dehaghani, Davoud Ashouri, Saman Mousavian
• Keywords: CuO, Dynamic Rheometry, Fe₂O₃, Fe₃O₄, Layered Silica, Nanocomposite, Polycarbonate, Rheological Property

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