Abstract
The main goal of this article was to study the effect of ultrasonic treatment time on the mechanical properties of thermoplastic natural rubber (TPNR) nanocomposites. The intercalation of TPNR enhancement into layers of clay by increasing d-spacing was found using XRD. TEM micrograph showed a combination of intercalated—exfoliated structure of the TPNR composites with organic clay. The tensile properties of nanocomposites treated with ultrasonic increased as compared with untreated nanocomposites. The optimum ultrasonic treatment time was obtained at 1 h with the addition of a coupling agent (12% PP-g-MA). DMA has shown that the storage modulus E' and loss modulus E'' of TPNR nanocomposites had improved as compared with TPNR, the optimum results with ultrasonic effect achieved at 1 and 3 h. Ultrasonic treatment can promote the dispersion of the clay in TPNR and also improve the compatibility of organoclay filler and the TPNR matrix.
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