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Difference between revisions of "Surface Energy Analyzers"
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Surface Energy Analyzers (view source)
Revision as of 20:56, 29 January 2013
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[[Category:Analyzing]]{{Knoppen}} | [[Category:Analyzing]]{{Knoppen}} | ||
[[File:SEA.jpg|thumb|right|Surface Energy Analyzers]] | |||
'''Surface Energy Analyzer (SEA)''' is a new second generation Inverse Gas Chromatography (IGC)instrument. The surface energy analyzer is an advanced instrumentation for the characterisation of particulates, fibres and thin-films. It opens up a whole new world of sorption solutions. These are some of the facilities that the Surface energy anlayzer provides: | |||
* Surface energetics | |||
* Surface energy heterogeneity mapping | |||
* Unrivalled accuracy | |||
* Heats of sorption | |||
* Fully automated | |||
* Sorption isotherms | |||
* Humidity control | |||
* Phase transitions | |||
* Sample reconditioning | |||
* Diffusion kinetics | |||
* Wide temperature range | |||
Key properties measured by the surface energy analyzer include surface energy acid-base parameters, energetic heterogeneity mapping, batch-to-batch variations in surface chemistry, glass transition temperatures, adhesion – cohesion thermodynamics, and solubility parameters and crosslink density. | |||
==How does the Surface Energy Anlayzer (SEA) work== | |||
SEA | The SEA is based on Inverse Gas Chromatography (IGC) methodology and is a gas phase technique for characterising surface and bulk properties of solid materials. The principles of IGC are very simple, being the reverse of a conventional gas chromatographic (GC) experiment. | ||
A cylindrical column is uniformly packed with the solid material of interest, typically a powder, fibre or film. A pulse or constant concentration of gas is then injected down the column at a fixed carrier gas flow rate , and the time taken for the pulse or concentration front to elute down the column is measured by a detector. A series of IGC measurements with different gas phase probe molecules then allows access to a wide range of phyisco-chemical properties of the solid sample. | A cylindrical column is uniformly packed with the solid material of interest, typically a powder, fibre or film. A pulse or constant concentration of gas is then injected down the column at a fixed carrier gas flow rate , and the time taken for the pulse or concentration front to elute down the column is measured by a detector. A series of IGC measurements with different gas phase probe molecules then allows access to a wide range of phyisco-chemical properties of the solid sample. | ||