How Does DSC Analysis Work?
DSC testing allows you to measure the rate of heat flow in a sample in relation to an empty reference pan. The DSC heats two pans, a sample pan containing your sample and an empty reference pan. The DSC is then programmed to heat both pans at a specific rate, usually 10°C or 20°C/minute. The sample pan will require more heat to keep it heating at the same rate as the empty reference pan because it contains more material. This difference in the amount of heat is what the DSC measures. When polymers melt they absorb heat and therefore this is called an endothermic reaction whereas a curing reaction gives off heat and is considered an exothermic reaction.