Thermal Properties of PMMA/Montmorillonite Clay Nanocomposites
Authors: Jothi Rajan, M. A.; Mathavan, T.; Ramasubbu, A.; Thaddeus, Arockiam; Fragrance Latha, V.; Vivekanandam, T. S.; Umapathy, S.
Source: Journal of Nanoscience and Nanotechnology, Volume 6, Number 12, December 2006 , pp. 3993-3996(4)
Publisher: American Scientific Publishers
Abstract:Polymer/Clay offer tremendous improvement in wide range of physical and engineering properties for polymers with low filler loading. In nanotechnology polymer/clay nanocomposites use smectite-type clays that have layered structures. In this work, Poly (methyl methacrylate) (PMMA) was synthesized by free radical addition polymerization in the presence of high power ultrasound. The Poly (methyl methacrylate) (PMMA)-Montmorillonite (MMT) clay nanocomposites were synthesized by two different techniques viz., ultrasonic mixing and magnetic stirring. An analysis of the XRD data confirms that the composites are in the nanometer scale. The FTIR spectra show that there is strong interaction between the clay and the polymer that enhances the thermal stability. The thermal stability of the experimental nanocomposite prepared by the two processes is compared. Further analysis of XRD data shows that intercalation as well as exfoliation has taken place in both the types of nanocomposites preparation. An analysis of the TG, DTG curves reveal that the thermal stability is found to increase by nearly 30% for ultrasonic mixing than that of magnetic stirring.
Document Type: Research Article
Publication date: December 1, 2006
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