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Displaying 201 - 225 of 269

Polymer Layered-Silicate Nanocomposites from Thermally Stable Trialkyl-Imidazolium Treated Montmorillonite

August 16, 2002
Author(s)
Jeffrey W. Gilman, W H. Awad, Rick D. Davis, Cher H. Davis, John R. Shields, T E. Sutto, Richard H. Harris Jr., A B. Morgan, J H. Callahan, Paul C. Trulove, Hugh C. De Long
The limited thermal stability of alkyl ammonium cations and the processing instability of some polymers (polyamide-6 (PA-6) and polystyrene (PS)) in the presence of nanodispersed montmorillonite (MMT) has motivated the development of improved organophillic

Improved Thermal Stability Of Crown Ether And Imidazolium Treatments for Flame Retardant Polymer Layered-Silicate Nanocomposites

February 6, 2002
Author(s)
Jeffrey W. Gilman, Cher H. Davis, Rick D. Davis, W H. Awad, A B. Morgan, Paul C. Trulove, Hugh C. De Long, T E. Sutto, L J. Mathias, D Schiraldi
The thermal stability of the organic treatment present on a layered silicate is of utmost importance in preparing a polymer-layered silicate (clay) nanocomposite by melt processing methods. Specifically, the organic treatment must not decompose at

Recent Advances in Flame Retardant Polymer Nanocomposites

January 22, 2001
Author(s)
Jeffrey W. Gilman, Takashi Kashiwagi, A B. Morgan, Richard H. Harris Jr., L D. Brassell, W H. Awad, Rick D. Davis, L Chyall, T E. Sutto, Paul C. Trulove, H DeLong
A new approach to address the ever increasing demand for higher performance flame retarded products has recently focused on use of mica-type clays nano-dispersed in commodity polymers. These "nanocomposites" exhibit the unusual combination of reduced

Fire Safe Materials Project at NIST (NISTIR 6588)

November 1, 2000
Author(s)
Takashi Kashiwagi, Kathryn M. Butler, Jeffrey W. Gilman
The results of two studies, which are parts of Fire Safe Materials Project at the National Institute of Standards and Technology (NIST), are presented. One of them is a study of the effects on gasification rates of the addition of silica particles to

Flame Retardant Mechanism of Silica Gel/Silica

November 1, 2000
Author(s)
Takashi Kashiwagi, Jeffrey W. Gilman, Kathryn M. Butler, Richard H. Harris Jr., John R. Shields, A Asano
Various types of silica, silica gel, fumed silicas and fused silica were added to polypropylene and polyethylene oxide to determine their flame retardant effectiveness and mechanisms. Polypropylene was chosen as a non-char-forming thermoplastic and

Flammability Properties of Polymer-Layered-Silicate Nanocomposites, Polypropylene and Polystyrene Nanocomposites

July 17, 2000
Author(s)
Jeffrey W. Gilman, C L. Jackson, A B. Morgan, Richard H. Harris Jr., E Manias, E P. Giannelis, M Wuthenow, David Hilton, S H. Phillips
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
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