In recent years, nanoclays have attracted much attention because of their ability to enhance the mechanical
properties of rubber vulcanizates [2–9]. The improvement
in properties can be achieved at remarkably low clay
content (less than 10 phr) if the clay silicate layers are able
to disperse into the polymer matrix at the nanoscale level
[7,8]. It has been reported that the incorporation of a small
amount of clay gives rise to a more rigid material, which is
reflected in a marked increase of hardness and modulus.
The nanocomposites of natural rubber have been found to
give optimum tensile strength and tear strength when
containing 5–8 phr of organomodified montmorillonite [9].
Although, the effect of types of filler on the properties of