Central Research Laboratory Application and Research Center

Thermal Analysis Laboratory

Laboratory Supervisors and Device Users

Zubeyde Nur GOKDOGAN
(Laboratory Supervisor and Device User)

E-Mail: zgokdogan@adiyaman.edu.tr  

Web: -
Phone : +90 416 2233800 - 2260

 Device Name

Differential Scanning Calorimeter Device (DSC)

 Device Brand and Model

PERKİN ELMER & DSC 8000

General Information

Differential Scanning Calorimeter Device (DSC) measures the amount of energy absorbed or released while the sample is heated, cooled or kept at a constant temperature. In this technique, the temperature difference from or away from the sample by reference is shown depending on the temperature or time. DSC uses the same measurement principles as DTA.
Both contain samples and references. Differently, in DSCs working with the power compensation principle, the sample temperature and the reference temperature are kept the same. If a temperature difference is detected between the sample and the reference, the amount of energy (power) supplied to the sample is changed to keep the temperature the same. In this way, the amount of heat transfer during phase change in the sample can be determined. 

Sample Preparation

For the scales, it is appropriate to use a sample of a suitable size but as small as possible (5-10 mg) and a powder dispersed sample.
Sample shape is also important in thermal measurements. The sample cup and the sample surface should be in contact. Especially in DSC and DTA measurements, our sample should fit perfectly into the sample container. In sensitive measurements, the contact surface should be increased by using the cover.

Usage Area

DSC's usage points are polymer, plastic, food, medication, ceramic and glass applications.

Analysis Request Form for DSC Analysis

Laboratory Supervisors  and Device Users

Zubeyde Nur GOKDOGAN
(Laboratory Supervisor and Device User)

E-Mail: zgokdogan@adiyaman.edu.tr  

Web: -
Phone: +90 416 2233800 - 2260    

Device Name

Thermogravimetric - Differential Thermal Analyzer (TG / DTA)

Device Brand and Model

HITACHI & 7300

General Information

Thermogravimetric analysis (TGA), is the method in which the change in sample mass is examined as a function of temperature or time in a controlled atmosphere (in an environment where the temperature is increased programmatically). 
Differential Thermal Analysis (DTA): The temperature difference between the sample and the reference material is examined as a function of the applied temperature. 

The temperature of the sample is subtracted from the temperature of the reference and this difference is plotted against increasing temperature. The peaks seen here can be endothermic or exothermic.

Sample Preparation

It is necessary to consider many factors in sample preparation for TG-DTA experiments. These; the sample must have all the properties of the material to be analyzed. The mass of the sample should be sufficient for the test. The sample should be able to change very little during the sample preparation phase. No contamination should occur in the sample during the sample preparation phase. The morphology of the sample affects the diffusion value of the reaction result and the order of the reaction course. However, it can also affect the heat transfer within the sample. The mass used in the experiment can affect the mass loss rates during the heat transfer process and similar diffusions.
For the scales, it is appropriate to use a sample of suitable size but as small as possible (5-10 mg) and a powder dispersed sample.
Sample shape is also important in thermal measurements. The sample cup and the sample surface should be in contact. Especially for DSC and DTA measurements, our sample should fit into the sample container. In sensitive measurements, the contact surface should be increased by using the cover.

Usage Area

Applications such as transformation, evaporation, sublimation, decomposition, decarbonation, dihydroxylation, dehydration, combustion products of organic materials, coal, oil and fuels, oxidation of metals, reduction, sintering, corrosion, decomposition of polymers can be performed with the TGA / DTA device. With TGA, the resistance of chemical and natural fiber-based textile materials (fiber, yarn, fabric) to heat and flame can be tested for quality control purposes. DTA determines melting, boiling and disintegration points with high accuracy. It also provides information about crystallization and phase changes.
Substances that can be examined by thermal methods; 

• Biological substances,

• Building materials,

• Catalysts,

• Ceramics and glasses,

• Solid oils,

• Soap and candles

• Flame extinguishers,

• Food and additives,

• Inorganic compounds,

• Liquid crystals,

• Metals and alloys.

Analysis Request Form for TG / DTA Analysis