SİMULTANE TERMOGRAVİMETRİK ANALİZÖR (STA)
Brand / Model: HITACHI / NEXTA STA 300
Description: The STA (Simultaneous Thermal Analysis) instrument is an important laboratory device used for material characterization. It enables simultaneous monitoring of mass changes and thermal behavior of a sample as a function of temperature or time under a controlled atmosphere and temperature program. The STA system combines Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) techniques in a single measurement. TGA is used to evaluate mass changes, while DSC analyzes thermal transitions and heat flow behavior of materials.
Working Principle: The instrument performs TGA and DSC measurements simultaneously.
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TGA measurement monitors changes in the sample mass during a programmed temperature profile, allowing detection of thermal decomposition, oxidative degradation, moisture loss, and volatile content.
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DSC measurement determines the difference in heat flow between the sample and a reference, enabling identification of melting, crystallization, glass transition temperature (Tg), and decomposition processes.
The combined evaluation of TGA and DSC signals provides comprehensive insight into the thermal properties of materials.
Instrument Features
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Balance type: Horizontal dual-beam design
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Temperature range: Room temperature to 1500 °C
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Heating rate: 0.01 – 150 °C/min
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TGA measurement range: ±400 mg
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Temperature sensitivity: ±0.07 °C
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Temperature accuracy: ±0.2 °C
Application Areas: STA is widely used for characterization of materials in environmental, food, pharmaceutical, and petrochemical applications. The main analyses that can be performed using STA include:
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Measurement of thermal resistance and thermal stability of materials
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Calculation of activation energy
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Determination of decomposition time at constant temperature
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Calculation of ash content
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Measurement of moisture and solvent loss
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Determination of filler content
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Evaluation of oxidation behavior
Device Specialist:
1. Lecturer Dr. Ülkü Demirci
E-mail: ulku.demirci@iste.edu.tr
Phone: 0 (326) 310 2844
2. Lecturer Ali Oktay Gül
E-mail: aoktay.gul@iste.edu.tr
Phone: 0 (326) 310 2840
