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Journal of Nanomaterials
Volume 2010, Article ID 327973, 9 pages
Research Article

Mechanical and Fracture Behaviors of Elastomer-Rich Thermoplastic Polyolefin/ S i C p Nanocomposites

Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong

Received 3 November 2009; Accepted 10 April 2010

Academic Editor: Gaurav Mago

Copyright © 2010 Cheng Zhu Liao and Sie Chin Tjong. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Elastomer-rich thermoplastic polyolefin (ETPO) resin containing 70 wt% maleated styrene-ethylene-butadiene-styrene (SEBS-g-MA) and 30 wt% polypropylene and its nanocomposites filled with 1–5 wt% SiC nanoparticles ( S i C p ) were fabricated using extrusion and injection molding techniques. The mechanical and thermal behaviors of ETPO and its nanocomposites were investigated. Tensile measurements showed that the S i C p additions lead to reductions in both tensile stiffness and strength of ETPO. However, Izod impact and EWF measurements indicated that the impact strength and fracture toughness of ETPO improve substantially with increasing S i C p content. This demonstrated that SiC nanoparticles toughen the ETPO blend effectively. Furthermore, S i C p additions were found to improve the thermal resistance of ETPO blend considerably.