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| iGC Surface Energy Analyser |
The Surface Energy Analyzer (SEA) is a new Inverse Gas Chromatography (iGC) instrument for the characterisation of surface and bulk properties of particulates, fibres and thin-films. The SEA from Surface Measurement Systems provides the following physico-chemical properties of a wide range of solid materials in a controlled humidity environment:
The principle of iGC is the reverse of conventional gas chromatography (GC). A chromatography column is uniformly packed with the solid material of interest, typically a powder, fibre or film. A vapour pulse or gas is then injected down the column at a fixed carrier gas flow rate. The time taken for the pulse or gas front to elute down the column is measured by a detector.
The vapor’s retention time is measured by a Flame Ionisation Detector (FID).
A series of measurements with different vapour/gas probe molecules allows access to the phyisco-chemical properties of the solid sample. Facilities include in-situ sample preconditioning, up to 12 Different Probe Gas Molecules and operation over a wide temperature range
Application example – dispersive surface energy. |
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The SEA wizard-based software facilitates the set-up of experimental conditions such as temperature variation, change of probe molecules, flow rates, and background humidity. On-the-fly method and sequence editing allow real-time changes. Automated peak and data analysis significantly reduces data processing time for the determination of thermodynamic parameters including:
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