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Displaying 251 - 269 of 269

Flammability Studies of Polymer Layered Silicate (Clay) Nanocomposites (NISTIR 6242)

October 1, 1998

Author(s)

Jeffrey W. Gilman, Takashi Kashiwagi, Marc R. Nyden, James E. Brown, C L. Jackson, S M. Lomakin, E P. Giannelis, E Manias

In the pursuit of improved approaches to fire retarding polymers a wide variety of concerns must be addressed, in addition to the flammability issues. First, the low cost of commodity polymers requires that the fire retardant (FR) approach also be of low

Characterization of Flame Retarded Polymer Combustion Chars by Solid-State 13C and 29Si NMR and EPR.

March 31, 1998

Author(s)

Jeffrey W. Gilman, Takashi Kashiwagi, David L. VanderHart, S M. Lomakin, V Nagy

Additives that increase the amount of charcoal-like residue of carbonaceous char that forms during polymer combustion are very effective fire retardants. However, very little is understood about the detailed structure of char or how it forms. Our research

Char Enhancing Approaches to Flame Retarding Polymers

February 1, 1998

Author(s)

Jeffrey W. Gilman, Takashi Kashiwagi, Richard H. Harris Jr., S M. Lomakin, J D. Lichtenhan, A. Bolf, P. Jones

Additives that increase the amount of charcoal-like residue or carbonaceous char that forms during polymer combustion are very effective fire retardants (FR). Our research efforts focus on reducing polymer flammability by promoting char formation. Our

Nanocomposites: A Revolutionary New Flame Retardant Approach.

December 1, 1997

Author(s)

Jeffrey W. Gilman, Takashi Kashiwagi, J D. Lichtenhan

New Flame Retardant Additives

September 24, 1997

Author(s)

Takashi Kashiwagi, Jeffrey W. Gilman, Marc R. Nyden

The fire safety of materials can be significantly enhanced by increased ignition resistance, reduced flame spread rates, reduced heat release rates, and reduced amounts of toxic and smoke products, preferably simultaneously. The use of more thermal stable

Flammability Studies of New Cyanate Ester Resins

May 4, 1997

Author(s)

Jeffrey W. Gilman, Richard H. Harris Jr., James E. Brown

We have synthesized several new cyanate ester functionalized polystyrene polymers and copolymers. Poly(4-cyanatostyrene), PCS, poly(4-cyanatostyrene) "polymer grade", PCS-PG, poly(4-cyanatostyrene "novalak grade", PCS-NG, poly(4-cyanatostyrene-co

Molecular Dynamics Simulations of the Thermal Degradation of Nano-Confined Polypropylene

January 1, 1997

Author(s)

Marc R. Nyden, Jeffrey W. Gilman

Molecular dynamics simulations of the thermal degradation of polymer nanocomposites were performed in an attempt to explain the reduction in the flammability of these materials, as compared to the pure polymer, that has been observed in experimental

Char Enhancing Approaches to Polymer Flammability: The Effect of Radicals on Magic Angle Spinning 13C NMR of Chars.

October 28, 1996

Author(s)

Jeffrey W. Gilman, Takashi Kashiwagi, David L. VanderHart, S M. Lomakin, V Nagy

Additives that increase the amount of charcoal-like residue or carbonaceous char that forms during polymer combustion are very effective fire retardants. However, very little is understood about the detailed struture of char or how it forms. Our research

Polymer Combustion and New Flame Retardants

May 20, 1996

Author(s)

Takashi Kashiwagi, Anthony P. Hamins, Kenneth D. Steckler, Jeffrey W. Gilman

The combustion of polymers is a complex coupled process characterized by energy feedback from a flame to the polymer surface and subsequent gasification of the polymer to generate combustible degradation products. Energy feedback characteristics for two

Characterizing and Fractionating Native Cellulose Nanofibers

Author(s)

Iulia A. Sacui, Jeffrey W. Gilman

Cellulose nanofibers have good elastic modulus properties and can be used as nano-reinforcements in polymer composites. Native cellulose nanofibers from wood, Tunicate, and bacteria (Acetobacter xylium) were characterized by atomic force microscopy (AFM)

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