Differential Thermal Analysis Essay

Differential scanning calorimeter (DSC):
Abstract:
The report is written to explain DSC, the thermal analysis technique. In this technique the differential analysis on the base of reference material is done at different temperature. A very close and similar technique is DTA (Differential Thermal Analysis) . In these technique the material is heated at different temperature although sometimes isothermal analysis also done for specific applications. The temperature is recorded for any heat release or absorption. So the heat capacity is measured at those temperatures. Two possible modes for DSC are power compensation mode and heat flux mode DSC. So, DSC is a technique which measure the heat capacity at various temperature of material and reference.

In this technique the differential analysis on the base of reference material is done at different temperature. A very close and similar technique is DTA (Differential Thermal Analysis) . In these technique the material is heated at different temperature although sometimes isothermal analysis also done for specific applications. The temperature is recorded for any heat release or absorption. So the heat capacity is measured at those temperatures. Two possible modes for DSC are power compensation mode and heat flux mode DSC. So, DSC is a technique which measure the heat capacity at various temperature of material and reference. M.J.O Neill and E.S Watson has discovered this technique in 1962 . The technique is represented in 1963 at the conference of Analytical chemistry and applied spectroscopy. The main classifications

These reactions are studied using DSC.
In case of carbohydrates a phenomena called gelatinization (A physiochemical transformation due to heat treatment of carbohydrates) is studied using the DSC as the DSC uses enthalpy changes to study the phase transformation during these reactions. Applications in liquid crystals:
Liquid crystal is transient state between the liquid and solid transitions, in which the molecules has the orderly arrangement of solid crystals as well as the flow properties of liquids. These states has anisotropic behavior and used for color sensors and color displays. The small energy changes from the isotropic phases (solids or liquids) to liquid crystals, are important for properties of liquid crystals. DSC is used to study these small changes. Oxidative capacity:
DSC is used to study the oxidation of substance by using an air sealed chamber in DSC. The test is done at constant temperature. The nitrogen atmosphere is then replaced with oxygen with a moderate pace. The oxidation reaction is then studied as the product has different enthalpy. This test is used to study the storage capabilities of the