Natural rubber/Ethylene Propylene Diene Monomer (NR/ EPDM) blends of five different compositions (0/100), (25/75), (50/50), (75/25) and (100/0) with 1, 3, 5 and 7 phr organo-modified nanoclay (Cloisite 15A) were prepared by two-roll mill. The effect of organo-modified layered nanosilicates and composition on the cure characteristics, microstructure, mechanical, and rheological properties of the nanocomposites were studied. Results suggested the intercalation of polymer chains into the silicate layers which was evidenced by d-spacing results of X-ray diffraction patterns. TEM micrographs also directly confirmed XRD results. Mechanical properties of the nanocomposites depicted a nearly 40 % percents increase respectively in the tensile modulus of 75NR/25EPDM containing 7 wt.% nanoclay. 2 Experimental 2.1 Material Natural rubber (SMR 20), EPDM (KEP 270), nano-clay and the curing system (Zinc Oxide, Sulfur, Stearic Acid, MBTS 48 Ó Carl Hanser Verlag, Munich Intern. Polymer Processing XXVI (2011) 1

In the published article cited above, the following errors were discovered.Page 1278 (top): Figure 1. (a) XRD results of NR75/EPDM25 nanocomposites containing 1, 3, 5, and 7 wt % nanoclay. (b) XRD results of different compositions of NR/EPDM containing 3 wt % nanoclay.The caption was incorrect and should have read: Figure 1. (a) XRD results of NR75/EPDM25 nanocomposites containing 1, 3, 5, and 7 wt % nanoclay. 4 (b) XRD results of different compositions of NR/EPDM containing 3 wt % nanoclay.

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In the published article cited above, the following errors were discovered.Page 1278 (top):