A careful review of both the high shear and low shear rheology
levels should be considered when evaluating the effectiveness of defoamers, especially when comparisons are made with different paint batches.
Effect of Stirring Time on the Dynamic Shear Rheology
of the PAN-co-MAA/DMF Solution
The Rolie-Poly (RP) constitutive equation was used to fit the transient extensional and shear rheology
data for the unmodified (linear chain) copolymer 1CP.
Mechanisms of Steady Shear Rheology
in Polymer Composites
of the uncompatibilized PA6/EBA blends with varying volume fraction of the dispersed phase ([[PHI].sub.d] = 0-0.381) studied using capillary rheometer, reveals that the interfacial interaction between the component polymers play an important role during How.
In addition, the tensile stress growth curves display very little deviation from the linear viscoelastic envelope, 3[[eta].sup.+], that was determined independently from linear viscoelastic shear rheology
measurements, plotted as a continuous line in Fig.
Such behaviors are typically observed in the shear rheology
of polyolefins [13-15].
For example, divergent viscosity at low shear rates in steady shear rheology
and flattening of the storage modulus in the terminal regime of SAOS are both associated with the increased solid-like response resulting from filler-filler interactions.
In this work, shear rheology
and microstructure evolution of Vectran V400P TLCP are reported.