Differential Scanning Calorimetry (DSC)
Differential Scanning Calorimetry (DSC)
Differential Scanning Calorimetry (DSC)
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<strong>DSC</strong>: How are Heat Capacity and<br />
Specific Heat Measured?<br />
�In a <strong>DSC</strong> experiment, heat capacity is measured as the<br />
absolute value of the heat flow, divided by the heating<br />
rate, and multiplied by a calibration constant.<br />
dH/dt = Cp (dT/dt)<br />
or<br />
Cp = [(dH/dt)/(dT/dt)] x E<br />
E = calibration constant<br />
<strong>DSC</strong>: How Heating Rate Shifts<br />
Heat Flow<br />
Heat Flow (mW)<br />
0<br />
-2<br />
-4<br />
-6<br />
-8<br />
106. 85° C<br />
-2.137mW<br />
106. 85° C<br />
- 40175mW<br />
106. 85° C<br />
-8.104mW<br />
5°C/min<br />
10°C/min<br />
20°C/min<br />
-10<br />
40 60 80 100 120 140 160 180 200
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