New Dimensions in Material Characterization

Unprecedented coupling of thermogravimetric analysis with gas chromatography and mass spectrometry yields significantly more information

For the analysis of complex reactions such as the release of gases from additives made of polymer blends, thermogravimetric analysis alone is often not sufficient. Coupling the simultaneous thermobalance (TGA or TGA-DSC) to a gas chromatograph-mass spectrometer (GC-MS), however, yields additional findings to help in identifying the components released.

Netzsch TGA and Simultaneous TGA-DSC (STA) systems are arranged vertically with the sample above the balance, allowing the gases to flow in the natural upward direction. This design is ideal for coupling gas analysis equipment to the top of the furnace.

Netzsch, in collaboration with JAS (Joint Analytical Systems, GmbH), has forged a breakthrough in reaction gas analysis. Reaction gases from the STA are fed directly into the GC valve box by means of a heated transfer line. Via a sample loop, the substances then arrive at the GC column, where they are separated and then analyzed by means of a mass selective detector. What sets the new system apart is the fact that the start of the measurement is event-driven. This enables temperature-correlated detection of the substances released, which in turn allows for direct correlation with mass loss steps.

Not long after product launch, the system had already been installed at various laboratories, including Pacific Northwest National Laboratory (PNNL) in Richland, Washington, Chevron Energy Company in Richmond, California, the University of Oklahoma's Department of Chemical, Biological, and Materials Engineering, in Norman, Oklahoma, and National Defence in Gatineau, Quebec. PNNL is using the new system to analyze the production of simulated radioactive waste glass from batch chemistry through the melt state. The data will then be used to populate models to predict melt performance through changes in composition.

About Netzsch: when it comes to thermal analysis, calorimetry and the determination of thermophysical properties, Netzsch leads the way. Our 50 years of extensive applications experience and engineering know-how, broad state-of-the-art product portfolio, and comprehensive service offerings ensure that our solutions will not only meet your every requirement but also exceed your every expectation.

About Joint Analytical Systems, Inc.: JAS offers innovative gas and liquid chromatography chemical analysis systems and customer-specific solutions based on the market-leading Agilent Technologies instrumentation platforms. Since its foundation in 1995, JAS has quickly evolved to one of the major Agilent Technologies Channel Partners.



Fumi Akimaru, Marketing Manager

129 Middlesex Turnpike, Burlington, MA 01803 USA

Telephone: +1 (781) 272 5353,

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