Abstract
The extensional rheology and dispersion behavior of high impact polystyrene (HIPS) and HIPS/TiO2 nanocomposites prepared by melt‐compounding were investigated. The influence of ethylene‐vinyl acetate (EVA) copolymer on the extensional rheology of HIPS/TiO2 masterbatches was also researched. The rheological experiments investigated with Rosand Presicion Rheometer confirmed that the HIPS/TiO2 masterbatches, the HIPS/EVA/TiO2 masterbatches and the HIPS/TiO2 nanocomposites with low TiO2 loading shown different extensional rheology in comparison to the pure HIPS. Field‐emission scanning electron microscopy (FE‐SEM) shown the dispersion morphology of TiO2 nanoparticles in HIPS based nanocomposites and indicated the influence of TiO2 dispersion behavior on the unusual extensional rheology of HIPS nanocomposites.
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