Synthesis of Poly(methyl methacrylate)/Montmorillonite Nanocomposites Using a 3-D Surfactant as an Organic Modifier

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Abstract:

Poly(methyl methacrylate)/Montmorillonite clay nanocomposites were synthesized via the free radical polymerization of methyl methacrylate in the presence of alkyl ammonium substituted polysilsesquioxane surfactant-modified clay and AIBN initiator in ethanol and aqueous ethanol solvent. MMT clay was initially cation exchanged with the surfactant to enhance its hydrophobicity and to expand the interlamellar spaces of silicate platelets. The 3-D structured surfactant and water molecules reduce the surface energy of the clay dramatically, which promotes miscibility of polymer/clay nanocomposites. The intercalation and dispersion of clay were quantified by both X-ray diffraction and transmission electron microscopy, and the morphologies of the nanocomposites were observed by scanning electron microscopy. Both the alkyl ammonium polysilsesquioxane surfactant and filler clay enhanced thermal and mechanical properties of the nanocomposites as investigated with thermo gravimetric analysis and differential scanning calorimetry.

Keywords: MONTMORILLONITE CLAY; NANOCOMPOSITES; POLY(METHYL METHACRYLATE); POLYSILSESQUIOXANE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2010.1413

Publication date: April 1, 2010

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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