THERMOGRAVIMETRY

SPEAKERS:

MADIHA AHMED

&

NOOR- UL- AIN

THERMOGRAVIMETRY“…. a technique in which the mass of a substance is measured as a function of temperature, while the substance is subjected to a controlled temperature programme.”

THERMOBALANCE DEVICE

PARTS OF THERMOBALANCE 3 Essential parts of thermo balance which are as follows:

Programmable Furnace

Microbalance

Recorder

PROGRAMMABLE FURNACE:A furnace is an enclosed structure used for

heating materials to very high temperatures.

MICROBALANCE

A microbalance is capable of making precise measurements of weight of objects of relatively small mass.

RECORDER:Recorder is use to record the data in computer in graphical form for further interpretation.

TEMPERATURE PROGRAMMER

BALANCE

CONTROLLER

POWER FURNACE TEMP.

SAMPLE TEMP.

WEIGHTGAS IN

GAS-TIGHTENCLOSURE

SAMPLE

HEATER

INSTRUMENTATION:

TGA CURVE: The plot also shows the derivative of the TG curve, or the DTG curve, which is often useful in revealing extra detail, such as the small event around 400°C.