Rheology of nanocomposites

Interfacial relaxation mechanisms in polymer nanocomposites through the rheological study on polymer/grafted nanoparticles

“…The rheology properties of the GF and GT nanocomposites exhibit completely opposite temperature-dependence because of the different time-scale relaxation units. By arising the testing temperature, the contribution of the nano-filler network on rheological properties can be highlighted, which has been certified in the former study [70]. The performance results from the difference of the topology of the nanoparticles can be clearly distinguished in our research.…”

“…To extend the frequency range accessible to dynamic rheometer for the study of nanocomposites, TTS [69], creep testing [60] and stress relaxation testing [33] are used by many researchers. However, not only the pure PLA undergoes a serious thermal degradation problem; but more important is that the application of the TTS on nanocomposites requires the independent of zero shear modulus G 0 on temperature in the shear rheology studies, according to Assche's research [70]. The research on the temperature dependence of rheological parameters (Figs.…”

Optimization of Extrusion Parameters for Preparing PCL‐Layered Silicate Nanocomposites Supported by Modeling of Twin‐Screw Extrusion

“…It is reported that the flow behavior of polymer/nanoclay nanocomposites differs substantially from that of the unfilled polymer 9, 23, 28. The rheological properties are affected by the exfoliated and intercalated clay particles due to the formation of a so‐called percolation network or house‐of‐cards structure11, 29 throughout the polymer matrix.…”

“…In order to allow for a more quantitative assessment of the filler dispersion state in the different nanocomposite samples, produced using different processing conditions, the level of dispersion was also assessed using a model describing the rheological behavior of the prepared PCL nanocomposites 23. The evolution of the absolute viscosity | η *| as a function of angular frequency ω for nanocomposites can be described by Equation 1, which combines the Yasuda‐Carreau equation13, 31–33 for describing shear thinning in shear experiments with an additional term incorporating the influence of the nanofiller.…”

“…To assess the dispersion quality of the nanoclay in the PCL nanocomposites using different processing conditions, wide angle X‐ray diffraction (WAXD) is used as well as less conventional methods like rheometry, mechanical analysis, and quasi‐isothermal crystallization experiments 9, 10, 23…”