The Open University selected a general research instrument to complement a number of other techniques for polymer characterisation in forensic-type materials investigations
A thermal analyser supplied by Mettler Toledo is playing a key role in the Materials Engineering Department of the Open University.
Specialising in materials teaching and research involving materials characterisation and melting point determination, the Milton Keynes-based department employs a number of techniques to identify and characterise materials including polymers, metals, alloys and lead-free solders. Research plays a fundamental role in the work of the Open University and it is vital that the latest technology and equipment is used to complete important research studies.
As Gordon Imlach, senior technician, explains: "The thermal analyser was required as a general research instrument to complement a number of other techniques available to the department - FT-IR spectroscopy and electron microscopy.
We needed the instrument for polymer characterisation in 'forensic'-type materials investigations as well as for a quality assurance tool, for example, to ensure polymer samples supplied for use in teaching activities are correctly identified. In addition the Solder Research Group is undertaking innovative work in the characterisation of lead-free solders which involves the periodic supply of new solders from manufacturers.
These are quality checked using DSC to confirm the nature of the material." A decision was made to upgrade to a new DSC.
In addition to the latest technology the department wanted support and technical back-up when it was required.
After initial enquiries Mettler Toledo was chosen as the ideal equipment supplier.
Mettler Toledo suggested that the DSC822e/400 would be the best instrument for the department's specific requirements.
This thermal analyser can be used for temperatures up to 700C and its highly sensitive ceramic DSC sensor is used to measure the difference between the heat flows to the sample and the reference crucible.
Due to its modular design the DSC822e/400 is suitable for manual or automatic operation.
It allows a clear characterisation of products even though only small sample amounts are needed for the analysis.
Results derived from the measurements range from single temperature values to the description of complex kinetic reactions.
The instrument is ideal for numerous applications including routine quality control measurements, where automation capability and simple operation is required, or in research where high sensitivity and flexibility are important aspects.
Easy and simple to operate with a large dynamic measurement range, the DSC822e/400 has excellent peak resolution thanks to a low signal time constant, a wide temperature range with various cooling options and excellent temperature accuracy.
The new installation has had an enormous impact on the department as Gordon Imlach explains: "The most obvious benefit of this new system is the general reliability compared to previous equipment.
Also the ease of use particularly in terms of data/plot manipulation is much more versatile.
Additionally the instrument does not require constant re-calibration due to its stability.
The additional capability afforded by the new cooling accessory is also highly valued for those polymers with glass transitions within the -40C to +20C range.
All this gives us increased confidence in the performance we expect and the results obtained."
