A thermodynamic approach to the rheology of highly interactive filler-polymer mixtures. Part II. Comparison with polystyrene/nanosilica mixtures
作者： G. Havet , A.I. Isayev
DOI: 10.1007/S00397-002-0253-Z
关键词:
摘要: The dynamic properties as a function of frequency and strain amplitude, steady-state viscosity shear rate, transient stresses at startup cessation flow polystyrene (PS)/fumed silica mixtures various concentrations were investigated. An abrupt change in the viscoelastic was noticed concentration above 1% by volume. Observations means scanning electron microscopy (SEM) indicate presence three-dimensional network through bridging filler particles adsorbed polymer. behavior is simulated utilizing theory proposed Part I (Havet Isayev 2001) based on double created entangled polymer matrix with taken into account density polymer-filler interactions hydrodynamic reinforcement. steps for determining model parameters required to carry out simulation are described. major features rheological highly interactive captured qualitatively some cases, quantitatively predicted.
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