What is DSC polymer?
Differential scanning calorimetry (DSC) is a technique used to investigate the response of polymers to heating. DSC can be used to study the melting of a crystalline polymer or the glass transition. The DSC set-up is composed of a measurement chamber and a computer.
What is modulated DSC?
Modulated DSC is a technique which also measures the difference in heat flow between a sample and an inert. reference as a function of time and temperature. In addition, the same “heat flux” cell design is used. However, in MDSC a different heating profile (temperature regime) is applied to the sample and reference.
How does DSC measure Tg?
Simply stated, DSC utilizes a heat flow technique and compares the amount of heat supplied to the test sample and a similarly heated “reference” to determine transition points. Tg is typically calculated by using a half-height technique in the transition region.
Why is DSC used?
DSC is used to measure enthalpy changes due to changes in the physical and chemical properties of a material as a function of temperature or time. DSC analysis measures the heat flow produced in a sample when it is heated, cooled, or held isothermally at constant temperature.
What do you infer from DSC?
Differential scanning calorimetry (DSC) is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature.
What is modulated differential scanning calorimetry?
Modulated differential scanning calorimetry allows detection of reaction-induced phase separations. The apparent heat capacity changes as phase separation occurs. The cloud point can be determined with optical microscopy, and there is a correspondence between the optical method and the calorimetry method [285,286].
What is differential scanning calorimetry used for?
Differential scanning calorimetry can be used to measure a number of characteristic properties of a sample. Using this technique it is possible to observe fusion and crystallization events as well as glass transition temperatures Tg. DSC can also be used to study oxidation, as well as other chemical reactions.
What is TG TM and TC?
Glass Transition Temperature (Tg) Melting Point (Tm) Melting Point (Tm) & Crystallization Temperature (Tc)
What is a DSC instrument?
DSC is a thermal analysis apparatus measuring how physical properties of a sample change, along with temperature against time. 10. In other words, the device is a thermal analysis instrument that determines the temperature and heat flow associated with material transitions as a function of time and temperature.