Among the characteristics in the formed coating, the effective aspect ratio of the clay is perhaps the most critical, which is highly dependent on the degree of clay exfoliation in the coating.
Estimations of effective aspect ratio are possible with the aid of model predictions.
It is also possible to predict the effective aspect ratio of the nanoclay from the models and it will be discussed later.
It is difficult to obtain the effective aspect ratio ([phi]) of the clay in the nanocomposites.
The effective aspect ratio
of the trapezoidal structure can be calculated using the following equation:
It may be concluded that fiber sizing, as well as the number of filaments in a bundle, has a direct bearing on the effective aspect ratio
of the reinforcing fiber, which controls the modulus and strength values of the discontinuous-fiber composites.
Such stacks have a lower effective aspect ratio
and a lower effective Young's modulus than the completely exfoliated particles.
 who used a simple interface model to quantify imperfect interfacial bonding and introduced the concept of an effective aspect ratio
and an effective volume fraction for platelet reinforcements.
It is hoped that the best length-averaging technique will serve to determine the effective aspect ratio
that can be used in numerical simulations.
The melt intercalation of the polymer in the clay layers results in decrease in the particle size, thereby improving the effective aspect ratio
of the particles.
3 that the apparent permeability decreases with decreasing effective aspect ratio
. The effective aspect ratio
is defined as the ratio of the dimension of the fiber parallel to the applied field to that of the dimension of the fiber transverse to the applied field.
Although for long walls this difference is insignificant, for narrow walls it is a considerable change, increasing the effective aspect ratios
in 1.2-m (4-ft.) and 0.6-m (2-ft.) walls by 14 percent and 33 percent, respectively.