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14 February 2017
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Teaching is concentrated in the faculties and schools, and the departments deal with research, which is also conducted by institutes and chairs, at the same time responsible for knowledge promotion.
Differential Scanning Calorimetry (DSC) is the most frequently used Thermal Analysis technique. This technique measures the enthalpy changes of the samples due to changes in their physical and chemical properties depending on temperature or time. It is used to analyse and study polymers such as thermoplastics, thermosets or elastomers as well as adhesives, food products, pharmaceuticals, chemicals, metallic materials and composites
In order to request sample analysis by DSC, you must contact the staff responsible for the equipment.
The toxicity and storage precautions of the samples must be reported. If unclaimed, surplus samples will be destroyed within one week of delivery of results.
This technique measures the heat absorbed or released by a sample when it is subjected to a temperature program. DSC is a differential technique, the heat flow is calculated from the difference in temperature of the sample with respect to a reference. The encapsulated sample and the reference (generally an empty capsule) are placed on the sensor, located in an oven with very precise temperature control.
A temperature program is created based on the process to be monitored (melting, crystallisation, glass transition, curing,...). In the case of a dynamic program, it is necessary to specify the initial temperature, the final temperature and the speed at which you want to do the heating or cooling (ºC/minute). In the case of an isotherm program, it is necessary to specify the temperature of the isotherm and its duration.
In the graph resulting from the analysis, the heat flow (mW) absorbed or released by the sample is represented according to temperature or time.
Examples of thermal processes that can be determined by Differential Scanning Calorimetry:
The acquisition of the TA Instruments Q2000 equipment has been co-financed by the Ministry of Science, Innovation and Universities-ERR:REF-NOT-FOUND- through the European Regional Development Fund (FEDER).
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