Transcription of Interpreting Unexpected Events and Transitions in …
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Interpreting Unexpected Events and Transitions in …
TA039 Interpreting Unexpected Events and Transitions in DSC Results1 TA039 Figure 1: Artificial DSC curveINTERPRETATION OF Events AND TRANSITIONSE vent 1: Large Endothermic Start-up HookCausesAt the beginning of a programmed heating experiment, there may be significant baseline change (usually endothermic) which occurs primarily based on differences in the heat capacity of the sample and reference. Since heat capacity is directly related to weight, an endothermic shift indicates that the reference pan is too light to offset the sample weight. This effect is heightened by faster heating operating subambient, the thermocouple junctions in the DSC cell base may get cold as cold is transferred from the cell cooling head.
TA039 Interpreting Unexpected Events and Transitions in DSC Results 1 TA039 Figure 1: Artificial DSC curve INTERPRETATION OF EVENTS AND TRANSITIONS
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