Differential Scanning Calorimetry

Differential Scanning Calorimetry (DSC) measures the temperatures and heat flows associated with transitions in materials as a function of time and temperature in a controlled atmosphere.These measurements provide quantitative and qualitative information about physical and chemical changes that involve endothermic or exothermic processes, or changes in heat capacity.
What Can we measure using a DSC ?

  • Glass transitions
  • Melting and boiling points
  • Crystallization time and temperature
  • Percent Crystallinity
  • Heats of fusion and reactions
  • Specific heat
  • Oxidative/thermal stability
  • Rate and degree of cure
  • Reaction kinetics
  • Purity

Technical specifications
The DSC in our lab is from TA instruments Q2000 series.It includes advanced Tzero technolgy, advanced MDSC, direct Cp measurement and platinum software. The hardware includes full VGA touch screen, user replaceble Tzero cell and full range cooling accessories.Following gives the details of the instrument perfomance.

Temperature range Ambient to 725 ºC
with cooling accessories -180 ºC to 725 ºC
Temperature precision +/- 0.01 ºC
Temperature accuracy +/- 0.1 ºC
Calorimtric reproducibility (indium metal) +/- 0.05%
Calorimtric precision (indium metal) +/- 0.05%
Dynamic mesurement range >+/-500mW
Baseline Curvature (Tzero; -50 to 300 ºC) 10µW
Baseline reproducibility with Tzero +/-10µW
Sensitivity 0.2µW
Indium height / width (mW/ºC 60ºC

Faculty In-charge: Susy Varughese
Student In-charge: Jacob John