I obtained measurement curves from DSC. It's endothermic heat flow vs. time or temperature, my concern is how to obtain the slope=deltaP/deltaT via the software or using data.
Most DSC apparatus producers (such as NETZSCH) supply an analysis software (e.g. "Proteus") together with the equipment, where you can select the corresponding curve and calculate the the 1. derivative (which is the slope) or even the 2. derivative. I have done this in the Fig. with the NETZSCH software: Blue is the DSC curve (phase transition of potassium sulfate) and red is the 1st derivative, labeled at the axis with DDSC. If you don't have a suitable software available, then export the data with equidistant abscissa (temperature or time) and the slope is then simply the difference between subsequent ordinate (DSC) values, divided by the abscissa step width.
Most DSC apparatus producers (such as NETZSCH) supply an analysis software (e.g. "Proteus") together with the equipment, where you can select the corresponding curve and calculate the the 1. derivative (which is the slope) or even the 2. derivative. I have done this in the Fig. with the NETZSCH software: Blue is the DSC curve (phase transition of potassium sulfate) and red is the 1st derivative, labeled at the axis with DDSC. If you don't have a suitable software available, then export the data with equidistant abscissa (temperature or time) and the slope is then simply the difference between subsequent ordinate (DSC) values, divided by the abscissa step width.
Dear Klimm, thanks for your answer. Actually my problem was about software management. I used STARe (in German) and after reading your reply, I easily find out the slope of my curve. My regards!
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials Chemistry