Flammability Properties of Polymer−Layered-Silicate Nanocomposites. Polypropylene and Polystyrene Nanocomposites

Autor: Richard H. Harris, Catheryn L. Jackson, Alexander B. Morgan, Emmanuel P. Giannelis, Melanie Wuthenow, Dawn Hilton, Jeffrey W. Gilman, Evangelos Manias, Shawn H. Phillips
Rok vydání: 2000
Předmět:
Zdroj: Chemistry of Materials. 12:1866-1873
ISSN: 1520-5002
0897-4756
DOI: 10.1021/cm0001760
Popis: Our continuing study of the mechanism of flammability reduction of polymer−layered-silicate nanocomposites has yielded results for polypropylene-graft-maleic anhydride and polystyrene−layered-silicate nanocomposites using montmorillonite and fluorohectorite. Cone calorimetry was used to measure the heat release rate and other flammability properties of the nanocomposites, under well-controlled combustion conditions. Both the polymer−layered-silicate nanocomposites and the combustion residues were studied by transmission electron microscopy and X-ray diffraction. We have found evidence for a common mechanism of flammability reduction. We also found that the type of layered silicate, nanodispersion, and processing degradation have an influence on the flammability reduction.
Databáze: OpenAIRE