Tensile and rheometric properties of calcium carbonate-filled natural rubber compounds without/with lauryl alcohol

Abstract

The tensile and rheometric properties of CaCO3, calcium carbonate-filled natural rubber (NR) compounds without and with lauryl alcohol (LA) as a new rubber additive were examined. The NR was filled by CaCO3 with a certain addition, thirty phr. The LA was synthesized from palm kernel oil and incorporated into CaCO3-filled NR compounds at 1, 3, 5 and 7 phr. From the overall results, the LA was a curative and also plasticizing material. As a curative material, LA enhanced both tensile strength and difference in torque up to a five phr of addition. As a plasticizing material, LA reduced tensile moduli but enhanced elongation at break of CaCO3-filled NR vulcanizates. A five phr of LA was an optimum addition.