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General recommendations for an optimized viewing of the presentation

General recommendations for an optimized viewing of the presentation. Prior to the viewing of the presentation, here below are some recommendations to optimize the use of this presentation Three different screens (plan, slide, comment) can be accessed in the same time or separately.

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General recommendations for an optimized viewing of the presentation

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  1. General recommendations for an optimized viewing of the presentation • Prior to the viewing of the presentation, here below are some recommendations to optimize the use of this presentation • Three different screens (plan, slide, comment) can be accessed in the same time or separately. • Firstly, adjust the size of the different screens with the mouse (click on the lines and displace the mouse to decrease or increase the size of the screen). See below the recommendations

  2. Differential Scanning Calorimetry Part 1: Principles and technology (1) Pierre LE PARLOUËR Therm@l Consulting leparlouer@thermalconsulting.com

  3. Differential Scanning Calorimetry Part 1: Principles and technology (2) Pierre LE PARLOUËR Therm@l Consulting leparlouer@thermalconsulting.com

  4. Definition of the DSC technique according to ICTAC (1) • What is ICTAC? • Definition of DSC according to ICTAC For more information see www.ictac.org

  5. Definition of the DSC technique according to ICTAC (1) • What is ICTAC? • Definition of DSC according to ICTAC For more information see www.ictac.org

  6. Principle of the thermal analysis technique (1) • Equipment • Heating block • Sample and inert reference material • Thermocouple • Measurement Heating

  7. Principle of the thermal analysis technique (2) Heating of the sample and the inert reference material at a constant heating rate Difference between sample and inert reference material temperatures Record of the furnace, sample and inert reference material temperatures

  8. Principle of the thermal analysis technique (2) Heating of the sample and the inert reference material at a constant heating rate Difference between sample and inert reference material temperatures Record of the furnace, sample and inert reference material temperatures

  9. Endothermic and exothermic effects (1) Heat Flux EXO Temperature (°C) heating cooling ENDO Time (sec) See also evitherm Thermal Analysis/Definitions

  10. Endothermic and exothermic effects (1) Which peak direction for the endothermic and exothermic effecst? Heat Flux EXO Temperature (°C) heating cooling ENDO Time (sec) See also evitherm Thermal Analysis/Definitions

  11. A typical DSC curve with endothermic and exothermic effects What are the detected endothermic effects? What are the detected exothermic effects? The DSC curve (3) See also evitherm Thermal Analysis/Applications

  12. A typical DSC curve with endothermic and exothermic effects What are the detected endothermic effects? What are the detected exothermic effects? The DSC curve (3) See also evitherm Thermal Analysis/Applications

  13. Diagram of a DSC apparatus (1) • A DSC apparatus is built around : - a differential detector - a signal amplifier - a furnace - a temperature controller - a gas control device - a data acquisition device See also evitherm Thermal Analysis/Equipment suppliers

  14. Diagram of a DSC apparatus (2) • A DSC apparatus is built around : - a differential detector - a signal amplifier - a furnace - a temperature controller - a gas control device - a data acquisition device See also evitherm Thermal Analysis/Equipment suppliers

  15. Mathematical expression of the calorimetric signal (1) • Expression of the heatflux from the reference side • Expression of the heatflux from the sample side

  16. Mathematical expression of the calorimetric signal (2) • Expression of the heatflux from the reference side • Expression of the heatflux from the sample side

  17. Mathematical expression of the calorimetric signal (1) • Determination of the difference of thermal power exchanged through the thermal resistance (R) between the furnace and each container • Final equation giving the mathematical expression of the calorimetric signal

  18. Mathematical expression of the calorimetric signal (2) • Determination of the difference of thermal power exchanged through the thermal resistance (R) between the furnace and each container • Final equation giving the mathematical expression of the calorimetric signal

  19. The calorimetric curve (1) Base line Heat Flux (mW) Tf Temperature (°C) Ti Area under the peak corresponding to the heat effect (expressed in mJ) Time (sec) See also evitherm Thermal Analysis/Units

  20. The calorimetric curve (2) Base line Heat Flux (mW) Tf Temperature (°C) Ti Area under the peak corresponding to the heat effect (expressed in mJ) Time (sec) See also evitherm Thermal Analysis/Units

  21. Specific heat determination (1) • Definition of the Specific heat capacity Cp • How to measure Cp from the DSC curve • Cp experiments 3 2 1

  22. Specific heat determination (2) • Definition of the Specific heat capacity Cp • How to measure Cp from the DSC curve • Cp experiments 3 2 1

  23. Different calorimetric principles (DSC, calorimetry) Heat Flux Plate DSC Heat Flux Calvet DSC Power compensated DSC See also evitherm Thermal Analysis/Measurement methods

  24. Principle of a plate-type DSC (1) • Description of a plate-type DSC • Measurement of the heat flow • Experimental conditions • Calibration Schematic of a plate-shape DSC sensor

  25. Principle of a plate-type DSC (2) • Description of a plate-type DSC • Measurement of the heat flow • Experimental conditions • Calibration Schematic of a plate-shape DSC sensor

  26. Principle of the power compensated DSC (1) • Description of a power compensated DSCC • Measurement of the heat flow • Experimental conditions • Calibration

  27. Principle of the power compensated DSC (2) • Description of a power compensated DSCC • Measurement of the heat flow • Experimental conditions • Calibration

  28. Principle of a Heat Flux CALVET DSC (1) • Calvet principle • Description of a heat flux Calvet DSC • Measurement of the heat flow • Experimental conditions • Calibration

  29. Principle of a Heat Flux CALVET DSC (2) • Calvet principle • Description of a heat flux Calvet DSC • Measurement of the heat flow • Experimental conditions • Calibration

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