the higher improvement in SEV – cured sample than EV – cured
one can be justified through the possibility of accelerator adsorption on the ND surface and higher concentration of free
accelerator in EV curing system causes lower surface activity of ND to interact with rubber chains. In SEV cured vulcanizate
the optimum length of rubber segments between crosslinks would lead to higher number of strong rubber-filler interactions
resulting in formation of an ordered and entangled microstructure.