Low rolling resistance conveyor belt

An article comprising an elastomeric body formed from an elastomeric composition comprising:

• two or more base elastomers including at least (i) one or more polybutadiene elastomers and (ii) one or more natural rubber(s) and/or one or more polyisoprene elastomer(s), wherein the two or more base elastomers altogether constitute at least 90 phr of the base elastomers of the elastomeric composition;
• one or more types of high aspect ratio nanofibers serving as a first reinforcing agent of the elastomeric composition, the one or more types of high aspect ratio nanofibers having a diameter in a range from 100 nm to less than 1,000 nm and an aspect ratio in a range from 500 to 2,500, the one or more types of high aspect ratio nanofibers being present in the elastomeric composition in a range from 1 phr to 5 phr;
• wherein the high aspect ratio nanofibers are derived from conjugate fibers dispersed in the elastomeric composition, the conjugate fibers having a sea-island fiber morphology in which, for each conjugate fiber, the nanofibers form islands within a sea of thermoplastic polymeric material, and wherein a mass ratio of the fibers forming the islands to the thermoplastic polymeric material forming the sea is in a range from 60:40 to 75:25;
• one or more additional reinforcing agent(s), wherein a total amount of all reinforcing agents in the composition, including the high aspect ratio nanofibers and the one or more additional reinforcing agent(s), is present in a range from 30 phr to 50 phr;
• wherein a ratio of modulus at 25% measured parallel to an orientation of the nanofibers relative to modulus at 25% measured perpendicular to an orientation of the nanofibers, as measured according to ASTM D412, is in a range from 1.0 to 2.0.