Differential Scanning Caloriemeter (DSC):
This technique is more or less similar to DTA except that it measures the amount of heat
absorbed or released by a sample as it is heated or cooled or kept at constant temperature
(isothermal). Here the sample and reference material are simultaneously heated or cooled at a
constant rate. The difference in temperature between them is proportional to the difference in
heat flow (from the heating source i.e. furnace), between the two materials. It is the well-
suited technique in the detection and further studies of liquid crystals. This technique is
applied to most of the polymers in evaluating the curing process of the thermoset materials as
well as in determining the heat of melting and melting point of thermoplastic polymers, glass
transition temperature (Tg.), endothermic & exothermic behaviour. Through the adjunct
process of isothermal crystallization it provides information regarding the molecular weight
and structural differences between very similar materials. The instrumentation is exactly
similar to that of DTA except for the difference in obtaining the results.
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