It can be seen that the interlayer spacing of NR/Na-MMT is 14.8 Å. This is almost the same as the interlayer spacing of the neat Na-MMT (i.e., 15.1 Å). In addition, the nanocomposites based
on NR/DO-12C and NR/TET-14C show interlayer spacings 14.8 Å and 15.5 Å, respectively. The unmodified Na-MMT clay in NR/clay nanocomposites had very similar interlayer spacing as the pristine clay, as did the modified clays DO-12C and TET-14C in nanocomposites. This is also
evident from the large agglomerates of clay