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International Journal of Polymer Science
Volume 2013, Article ID 717895, 5 pages
http://dx.doi.org/10.1155/2013/717895
Research Article

Synthesis and Characterization of Polyurethane-Nanoclay Composites

Materials Science and Engineering Department, University of Wisconsin-Milwaukee, 3200 N. Cramer Street, Milwaukee, WI 53201, USA

Received 17 December 2012; Revised 5 May 2013; Accepted 13 May 2013

Academic Editor: Hao Wang

Copyright © 2013 Manasa Nayani et al. 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.

Abstract

In this study polyurethane (PUR)-nanoclay composites were synthesized using methylene diphenyl diisocyanate, polyol, and hectorite clay. The weight percentage of hectorite clay was varied at three different levels to study its effect on the properties of the thermoplastic polyurethane nanocomposite. The nanocomposite polyurethane foam was synthesized in a 2-step reaction process. The first step involved the addition and dispersion of nanoclay into the isocyanate. The mixture was then mixed with the polyol, and the foam was cast in a preheated closed mold. The PUR-nanocomposite foams were analyzed for cell structure, physical, mechanical, and thermal properties. The composite foam showed significant increase in tensile and flexural strengths, abrasion resistance, and thermal properties.