POLY 91 |
| Layer-by-layer assembly, formerly called electrostatic self-assembly, is a method used to impart functionality to the surface of nearly any type of substrate. Thin films are deposited by alternately exposing a substrate to aqueous mixtures or solutions of mutually attractive molecules or particles. In most cases the attraction between species is provided by charge and each combination of a positively and negatively charged layer is referred to as a “bilayer”. Covalent layer-by-layer assembly, which is carried out in a similar fashion, emphasizes the combination between bilayers through covalent bondings. In here, polyvalent surface modification of polyethylene film and powder samples by covalent layer-by-layer assembly will be discussed. Applications of the produced thin film composites on PE substrates using aminated MWNTs and silica nanoparticles in the design of conductive materials or scratch-resistant materials will also be discussed. |
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General Papers: Polymers in Nanotechnology
1:00 PM-5:00 PM, Sunday, August 19, 2007 Westin Boston Waterfront -- Douglas, Oral
Division of Polymer Chemistry |