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Surface Characterization of Nanomaterials by Inverse Gas Chromatography

Date: Wednesday, 7 October 2015

Topic: Surface and bulk properties are important to the successful development of nanomaterials used for real-world applications. For instance, surface energy of nanoparticles can determine initial wetting behavior (i.e. hydrophilic, hydrophobic, or amphiphilic surfaces). The quality and performance of nanocomposites depend strongly on the interaction of the components at their interface. To enhance the adhesion properties at the interface, nanomaterials are often exposed to various surface functionalization processes. Also, solvent chemical selectivity can be strongly dependent on surface energy and surface acid-base properties. For the above reasons, vapor sorption techniques like Inverse Gas Chromatography (IGC) are ideal for characterizing the surface properties of nanomaterials. IGC allows a wide range of experiment temperatures, solvents, and sample morphologies to be studied.

This presentation will outline several studies where iGC has been used to characterize the surface energy, wetting behavior, and adhesion/cohesion properties of various nanomaterials. For instance, the surface energy and wettability of carbon-based nanomaterials for aqueous filtration of polyaromatic compounds (PACs) were investigated. Also, nanotube and nanoclay filler materials were studied in relation to their adhesion/cohesion phenomena in a polymer matrix. Finally, the effects of surface modification and thermal history were investigated on carbon nanotubes.

Who is it for? This webinar summarizes some of the recent IGC studies on various nanomaterials and would benefit researchers who are working on cellulose, carbon, clay, mineral, or fiber-based nanomaterials. In particular, researchers working on the effect of surface modification, thermal history, ageing, and raw material selection on nanocomposite adhesion, performance and stability would benefit from the webinar.

Presenter: Dr Dan Burnett
Dr Dan Burnett is the Director of Science Strategy for Surface Measurement Systems, Ltd. located at the North American headquarters in Allentown, PA. His team works on research studies and science applications for many prominent companies. He received his bachelor’s degree in Professional Chemistry from Eastern Michigan University in 1997 and Ph.D. degree in Chemical Engineering from the University of Michigan in 2001. Since joining Surface Measurement Systems in 2001, he has continued his interests in sorption science and surface chemistry on a range of materials including: pharmaceutical powders, natural and man-made fibers, polymers, films, and food/flavor systems. Dr Burnett has authored or co-authored over 25 papers in peer-reviewed journals and presented at numerous national and international conferences.

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