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Kevlar®-functionalized Nanotubes
IB-2873

APPLICATIONS OF TECHNOLOGY:

ADVANTAGES:

ABSTRACT:

Alex Zettl, Jean Fréchet and Toby Sainsbury of Berkeley Lab have developed a next-generation composite material by structurally and chemically integrating poly-p-phenyleneterephthalamide (PPTA), more commonly known as Kevlar®, with carbon, boron nitride or BCN alloy nanotubes. Fully integrating PPTA with nanotubes yields the ability to tune the electrical and thermal properties of the resulting composite while maintaining chemical functionality identical to PPTA. The invention includes a step-by-step process, and alternate routes, to sequentially functionalize nanotubes with PPTA monomer units and yield a novel hybrid material.

Composite materials are desirable for their high strength and durability, and the interface between components of composite materials is critical for their performance. Although carbon and boron nitride nanotubes offer exceptional mechanical, thermal and electrical properties, approaches to creating nanotube-based composites have yielded poorly dispersed mixtures with uncontrolled chemical reactions between nanotube ends and walls. The Berkeley Lab invention surpasses earlier attempts by using chemical and structural bonding, instead of a simple mixture, to achieve a superior composite material.

DEVELOPMENT STAGE: Proven principle. Nanotubes successfully functionalized with Kevlar® units.

STATUS:  Patent pending. Available for licensing or collaborative research.

FOR MORE INFORMATION:
Sainsbury, T., Erickson, K., Okawa, D., Zontes, C.S., Fréchet, J. M., Zettl, A. Kevlar Functionalized Carbon Nanotubes for Next Generation Composites, Chemistry of Materials, 22, 2164-2171 (2010).

SEE THESE OTHER BERKELEY LAB TECHNOLOGIES IN THIS FIELD:

Precise Control of Nanoparticle Self-Assembly over Multiple Length Scales, JIB-2662

Controlled Assembly of Nanocrystal/Organic Composites, IB-1941

Boron Nitride Nanotubes with Modified Surfaces, IB-2331, IB-2332

REFERENCE NUMBER: IB-2873

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