PRES 109 |
| We fabricate polymer nanocomposites with SWNT using a variety of methods and polymers to obtain improved mechanical properties, electrical conductivity, flammability, and thermal conductivity. We will discuss various studies that have advanced the understanding of the physical properties of these materials. Two percolation phenomena are observed for electrical conductivity with respect to nanotube concentration and nanotube alignment, and the maximum electrical conductivity occurs in non-isotropic composites. SWNT bundles can nucleate the crystallization of a polyethylene matrix and can template the crystal growth perpendicular to the SWNT axis. Various models for thermal conductivity are discussed for both the polymer composites and fluids containing SWNT, as well as considering the importance of matrix crystallinity and SWNT orientation. We also consider the effect of polymer molecular weight on the elastic modulus of composites to further the understanding of the nanotube network that produces a solid-like rheological response and reduce flammability. |
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SWNTs From Synthesis to Application, From the Lab to the Fab: In Memory of Dr. Richard Smalley
1:30 PM-5:00 PM, Tuesday, 12 September 2006 Moscone Center -- Room 306, Oral
Presidential Event |