Differential Scanning Calorimetry > Sunbury Laboratory > Sunbury DSC Lab

Sunbury  DSC Laboratory

Differential Scanning Calorimetry expertise at Sunbury Technology Centre laboratory

Differential Scanning Calorimetry Analysis:

Intertek Sunbury Technology Centre offers Differential Scanning Calorimetry (DSC) testing to complement the lab's range of analytical techniques. Major applications include the thermal characterisation of polymers, coatings and pharmaceutical products, as well as assessment of the oxidative stability of organic compounds such as oils, rubber and plastics (oxidation induction time).

• For Intertek's global laboratory capabilities in thermal analysis, please visit the Thermal Analysis homepage.

DSC is a highly informative tool for thermal characterisation of a wide range of materials including polymers, composites and adhesives. The instrument is a 2003 Mettler Toledo DSC 822 equipped with an auto-sampler to enable rapid assessment of large sample batches.

The DSC Calorimeter operates over a temperature range of –60C to 500C and is a sensitive technique for characterising phase changes such as glass transition temperature and crystalline melt temperature for a diverse range of material types. The data is useful to identify materials, differentiate homopolymers from copolymers or to characterize materials for their thermal performance.

DSC helps determine the following properties:

• Tg: Glass Transition Temperature, measured temperature (°C) at which amorphous polymers or amorphous parts of crystalline polymers go from hard, brittle states to a soft, or rubbery states.

• Tm: Melting point, measured temperature (°C) at which crystalline polymers melt.

• D Hm: Amount of energy (joules/gram) samples absorb during the melting phase.

• Tc: Crystallization point, measured temperature at which polymers crystallize upon heating.

• D Hc: Measured amount of energy (joules/gram) a sample releases while crystallizing.

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