Authors Entezam, M. ; Khonakdar, H. A. ; Yousefi, A. A. ; Jafari, S.H. ; Wagenknecht, U. ; Heinrich, G.
Title Dynamic and transient shear start-up flow experiments for analyzing nanoclay localization in PP/PET blends: Correlation with microstructure
Date 17.12.2013
Number 41103
Abstract Dynamic and transient shear start-up flow experiments along with TEM, WAXS, and SEM analyses are performed on PP/PET blends and nanocomposites. The TEM results along with a theoretical analysis based on a thermodynamic model reveal that the clay particles are mainly localized in the PET phase. The localization of nanoclay in PET as the matrix phase leads to a refinement of morphology. The localization of clay is also studied by analyzing changes in complex viscosity and storage modulus in oscillation mode as well as the changes in power law index obtained from steady-state and transient shear start-up flow experiments. The changes in the rheological behavior of the blends are attributed to formation of clay network-like structures.
Publisher Macromolecular Materials and Engineering
Citation Macromolecular Materials and Engineering 298 (2013) 113-126
Tags blends clay localization microstructure nanocomposites rheology layered-silicate nanocomposites immiscible polymer blends morphology development rheological properties methacrylate) blends behavior coalescence particles copolymer compatibilization

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