Composites made from a combination of cis-polyisoprene (CPI) and nitrile butadiene rubber (NBR) were investigated to determine the effect of varying proportions of each additive on the mechanical and thermal properties of the final product. The use of a scanning electron microscope to quantify the structure of the material revealed that all samples were homogenous. Young's modulus and tensile strength were two of the mechanical properties studied. The blend composition ...