A macro STA-system for environmental samples

Kettrup, A.; Matuschek, G.; Utschick, H.; Namendorf, Ch.; Bräuer, G.

doi:10.1016/s0040-6031(97)00102-0

Cited by 13 publications

(2 citation statements)

References 16 publications

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“…Experimental parameters associated with mass spectroscopy coupled with TA systems are also discussed (60). In environmental applications of mass spectroscopy, it is found convenient to use a TG capable of using large samples (61,62).…”

Section: Instrumentationmentioning

confidence: 99%

Thermal Analysis

Dollimore

Lerdkanchanaporn

1998

Anal. Chem.

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Section: Instrumentationmentioning

confidence: 99%

Thermal Analysis

Dollimore

Lerdkanchanaporn

1998

Anal. Chem.

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“…In order to improve the research on thermogravimetric technique, scholars and research institutes in related fields from China, the United States, Russia, France, Germany, Netherlands, Norway, India, Japan, and Serbia have made great efforts in the research on various specimen specifications and purposes [6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Most of the studies are intended to increase temperature range, specimen weight range, heating rate, temperature accuracy, and weighing accuracy of thermogravimetric systems.…”

Section: Introductionmentioning

confidence: 99%

Metrology and Measurement Systems

An¹,

Dai²,

Xiao³

2019

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On the basis of induction heating, radiation heating and liquid nitrogen refrigeration, high-temperature, medium-temperature, normal-temperature and low-temperature heating/refrigeration furnaces were designed, respectively. An apparatus with a wide temperature range and high accuracy applied to test oxidation resistance of materials has been developed based on the thermogravimetric method and the heat transfer principle. The apparatus consists of four heating/cooling systems, a specimen fixture positioning unit, a laser positioning unit, vertical and horizontal moving guide rails, and a high-precision weighing balance. The apparatus, based on the thermogravimetric method, is able to test oxidation resistance of materials. In the test, the temperature range was −180∼3000 • C (the highest temperature is determined by material properties). The temperature control accuracy was ±5 • C. The accuracy of on-line weighing was ±0.1 mg. The measurement uncertainty was 0.2 mg. Compared with other relevant devices, this apparatus has its own advantages: simple operation, wide heating/cooling temperature range, sufficient specimen heating, high sensitivity and precision, and short heating/cooling time. The experimental results show that the developed apparatus presented in this study not only can be used for isothermal thermogravimetric tests, but also for thermal cycling tests and multi-step oxidation tests. With the effective integration of multiple heating apparatus and refrigeration apparatus, the apparatus breaks through the limitations of the heating/cooling temperature range of the existing devices, accomplishes the high-precision oxidation resistance test of materials in a wide temperature range, and will play a great role in improving the research of materials.

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Thermogravimetry of Polymers

Price

Hourston

Dumont³

2000

Encyclopedia of Analytical Chemistry

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Thermogravimetry (TG) is the study of the relationship between a sample's mass and its temperature. It can be used to study any physical (such as evaporation) or chemical process (such as thermal degradation) that causes a material to lose volatile gases. Polymers have different thermal stabilities and thus the qualitative “fingerprint” afforded by TG in terms of temperature range, extent and kinetics of decomposition provides a rapid means to distinguish one polymer from another using only milligram quantities of material. Experiments are most commonly carried out under conditions where the temperature is increased in a linear fashion with time or the sample is held isothermally at an elevated temperature, although more sophisticated temperature profiles are occasionally used for compositional and kinetic analysis. Processes which do not result in a change in sample mass are not detected by TG. Therefore simultaneous measurements by differential scanning calorimetry (DSC) are useful. Volatile decomposition products may be detected and identified (e.g. by infrared (IR) spectrometry or mass spectrometry (MS)) in order to elucidate the mechanism of mass changes. TG is used for quantitative compositional analysis of polymers, lifetime prediction and kinetic studies, making the technique invaluable in all stages of polymer development, fabrication and component testing.

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A macro STA-system for environmental samples

Cited by 13 publications

References 16 publications

Thermal Analysis

Thermal Analysis

Metrology and Measurement Systems

Thermogravimetry of Polymers

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