Novel Methods for the Fabrication of Nanomaterials and Their Applications

Aharon Gedanken 

Bar-Ilan University, Ramat-Gan 52900, Israel

Abstract

The four methods by which nanomaterials are being produced in my laboratory will be described briefly. The methods are: sonochemistry, microwave dielectric heating, sonoelectrochemistry, and RAPET (Reaction under Autogenic Pressureat Elevated Temperatures). I will concentrate in my talk on the application of these nanomaterials for various applicative or industrial projects.

For example sonochemistry have been employed for coating nanosilver particles on Nylon 6, 6 chips. The nanocrystals of pure silver, 50-100 nm in size, are finely dispersed on the polymer surface without damaging the Nylon 6,6 structure. This Ag/nylon nanocomposite is stable to many washing cycles, and thus can be used as a master batch for the production of nylon yarn by melting and spinning processes.. The fabric knitted from this yarn has shown excellent antimicrobial properties. In Figure 1 we present three stages in the preparation of the final product.

Some other applicative examples of nanomaterials prepared by the microwave and RAPET techniques will be presented.

Photo of nylon chips before and after sonochemical coating with silver, and Ag/nylon fibers spun from the Ag/nylon composite.

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Presentation: Oral at E-MRS Fall Meeting 2006, COST Action D30 Meeting, by Aharon Gedanken
See On-line Journal of E-MRS Fall Meeting 2006

Submitted: 2006-06-12 06:27
Revised:   2009-06-07 00:44
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