The larger interacting area between
PC and clay platelets in the well exfoliated clay morphology
might be the possible cause for such high improvement in mechanical
properties at such a lower clay loading [36]. Moreover, the
elongation at break was gradually decreased with increase in clay
loadings in the PC/BuTPP-MMT nanocomposites. The increase in
stress concentration with increase in clay loading into the PC matrix
might be responsible for the increase in brittleness in the
nanocomposites