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Thermal and flammability properties of a silica–poly(methylmethacrylate) nanocomposite
Authors:Takashi Kashiwagi  Alexander B Morgan  Joseph M Antonucci  Mark R VanLandingham  Richard H Harris  Walid H Awad  John R Shields
Abstract:PMMA, poly(metheylmethacrylate), nanocomposites were made by in situ radical polymerization of MMA, methylmethacrylate, with colloidal silica (ca. 12 nm) to study the effects of nanoscale silica particles on the physical properties and flammability properties of PMMA. Transparent samples resulted and the dispersity of the particles was examined by transmission electron microscopy and atomic force microscopy. The addition of nanosilica particles (13% by mass) did not significantly change the thermal stability, but it made a small improvement in modulus, and it reduced the peak heat release rate roughly 50%. Last, the flame‐retardant mechanism provided by the addition of nanosilica particles in PMMA is discussed. Published 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2072–2078, 2003
Keywords:nanocomposite  silica  poly(metheylmethacrylate)  flammability
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