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White rice kernels are produced in the rice milling process with the help of rubber rollers. Husks are removed from paddy due to friction between the surface of rubber rollers and the paddy layer when the paddy passes between the two rubber rollers [ 1 ,  2 ,  3 ,  4 ,  5 ,  6 ]. Improved physico-mechanical properties of rubber compounds are needed for husk removal. Based on this review, it was found that small scale rice processing mills in Tamil Nadu, India face the problem of the poor service life of rubber rollers. Rubber compounds with a greater hardness are better for husking rice but breakage in the rice is high. Rice breakage can be minimized when soft rubber is used but the wear rate for soft rubber is high [ 6 ,  7 ,  8 ,  9 ,  10 ,  11 ,  12 ]. This study discusses the production of new rubber compounds produced by substituting the proportions of carboxylated nitrile butadiene rubber (XNBR) and epoxidized natural rubber (ENR) with two different carbon blacks. Physico-mechanical properties and lab scale rice-husk separation studies are conducted for these rubber compounds developed. The conclusion is that XNBR- ENR blends with ISAF N231 variety of carbon black prove to be suitable materials for husk removal applications.

Husking and mechanical properties of ISAF N231/SAF N110 carbon black filled XNBR-ENR blend rubber compound for rice husk removal applications