ACMS

Thermal Analysis Lab


Location: ACMS 108A

Instrument: High Temperature Simultaneous Thermo-Gravimetric Analyzer(TGA) and Differential Scanning Calorimetry(DSC)
Model/Supplier:STA 8000 & 8500 Perkin Elmer Ltd.

Thermal analysis is regularly done on a range of crystalline and non-crystalline materials to understand the kinetics and thermodynamics of various phase transformations. Advantage of thermal analysis is that it can be carried out even on non-crystalline, such as polymers as well as inorganic materials. Differential scanning calorimetry(DSC) measures change of heat in sample with reference to a standard reference and hence we get a plot of differential heat as a function of temperature. Any transformation is recorded as a peak in the plot. Various attributes such as the amount of heat, start temperature for transformation, activation energy, etc can be determined from such plots.

Features

� Calorimetric sensitivity of 0.2µW allows capturing faintest of transformation where stored energy is small as IJ/gm
� High accuracy of heat flow can be obtained (0.2%), High precision of heat flow measurement(0.03%)
� Dynamic range of calorimeter( upto 1300mW)
� Very large range of temperature can be explored(-1800C to 7500C), high accuracy of temperature measurement(0.050C), and high precision of temperature measurement(0.0080C)
� Fine resolution of weight balance(0.2 µ-g)
� Large temperature range from 150C to 16000C
� High heating range(upto 10000C/min) and cooling rates


Application

� Thermal stability of severely deformed materials
� Thermal degradation of high temperature materials
� Glass transition and melting point of various bio-polymers

CONTACT

Convener: Prof. K Balani (kbalani@iitk.ac.in) Internal:6194
Lab Incharge: Kamlesh Thapliyal (Kamlesht@iitk.ac.in) Internal:6999
Lab Staff: Mr. Rupesh Kumar Sharma (rupeshks@iitk.ac.in) Internal:6999