Dynamic thermo-mechanical studies show that the addition of D-CNFs can increase storage modulus more effectively without deteriorating the thermal stability of epoxy matrix.
Previous work has also demonstrated that mechanically percolated nanocomposites exhibit logarithmically increasing storage modulus with time at low frequency, behavior attributed to the continuous development of a mesoscale organoclay network akin to that observed for colloidal gels.
With the frequency increasing, all specimens generally displayed an increasing storage modulus, decreasing loss modulus, and tan δ.
The work time is presented as the onset of increasing storage modulus, and the set time is presented as the tan δ minimum, which corresponds to storage modulus yielding.
An increase in dispersion quality can be correlated to an increased storage shear modulus of the uncured suspensions and to a decreased electrical conductivity in the bulk nanocomposite.
An increased storage and loss modulus for emulsions containing optimum PVA manifested desired viscoelastic interaction between dispersed and continuous phase, which further resulted in uniform jet stretching.
In oscillatory analysis, increased polymer concentrations increased the storage modulus (G′), the loss modulus (G″) and the dynamic viscosity, yet decreased the loss tangent (tan δ).
