Differential Scanning Calorimetry (DSC)
Differential Scanning Calorimetry (DSC)
Differential Scanning Calorimetry (DSC)
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M<strong>DSC</strong>: Purge Gas Flow Rates<br />
�Use Purge Gas Flow Rate of 50 mL/min. (N2) &<br />
25 ml/min (He)<br />
�Faster rates increase noise<br />
�Slower rates decrease sensitivity, increase<br />
baseline curvature<br />
�Flow Purge Gas through Vacuum Port<br />
at 50 mL/min.<br />
�Improves response of furnace<br />
�Facilitates wider range of modulation<br />
parameters<br />
M<strong>DSC</strong>: Baseline Calibration<br />
Identical to Standard<br />
<strong>DSC</strong> experiment<br />
Eliminates Baseline<br />
Drift<br />
Does not affect<br />
curvature<br />
-Slower heating rates<br />
contribute to<br />
curvature<br />
-Heavier sample<br />
masses minimize<br />
<<br />
Delta µ ( V)<br />
Baseline Calibration - 2920 M<strong>DSC</strong> (4)<br />
Sample: Empty Pans <strong>DSC</strong> File: D:\TA\<strong>DSC</strong>\...BASE1102.001<br />
-4<br />
-6<br />
-8<br />
Baseline Calibration<br />
Slope: -0.0005<br />
Offset: -8.564<br />
Cell Number: 319<br />
-90.29°C<br />
287.04°C<br />
-10<br />
-200 -100 0 100 200 300 400<br />
Temperature (°C)
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