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Study of the influence of nanoparticles on the performance and the properties of polyamide 6

von Dr. Mohammad Reza Sarbandi

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Fragment, Gesichtet, Gupta 1997, Mrs, SMWFragment, Schutzlevel sysop, Verschleierung

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Quelle: Gupta 1997
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5.5. Thermal characterization [242-244]

Thermoanalytical techniques are used for characterization of glass transition and melting temperature, thermal stability and other properties as a function of temperature of polymers and fibers.


[242] A. Turi, Thermal characterization of polymeric materials / ed. by Edith 2 London : Academic Press, 1997

[243] Höhne, Günther, Differential scanning calorimetry : with 19 tables., Berlin : Springer, 2003

[244] E. A. Turi, thermal analysis of polymers, Academic press, New York1982 [sic]

10.4 THERMAL CHARACTERIZATION

Thermoanalytical techniques are used for characterization of glass transition and melting temperatures, thermal stability and other properties as a function of temperature of polymers and fibres [22].


22. Turi, E.A. (1982) Thermal Analysis of Polymers, Academic Press, New York

Anmerkungen

The source is not mentioned.

Sichter
(Klgn), (Hindemith), WiseWoman

[2.] Mrs/Fragment 064 07 - Diskussion
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Bhattacharya et al. 2008, Fragment, Gesichtet, Mrs, SMWFragment, Schutzlevel sysop, Verschleierung

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The main thermal techniques are differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), dynamic mechanical analysis (DMA) and heat distortion temperature (HDT). Thermal analysis is based on the detection of changes in the heat content (enthalpy) or the specific heat of a sample with temperature.

5.5.1. Differential Scanning Calorimetry (DSC)

Differential scanning calorimetry is a thermo-analytical method that measures the difference between the amount of heat necessary to raise the temperature of sample and reference. It is used to study thermal transitions of a polymer. As thermal energy is supplied to the sample, its enthalpy increase and the temperature rises by an amount determined by the specific heat of the sample. The specific heat of the material changes slowly with temperature in a particular physical state, but alter sharply or discontinuously when a change of the state of the matter takes place. Apart from increasing the sample temperature, the supply of thermal energy may also induce physical or chemical changes in the sample (e.g. melting or decomposition) accompanied by a change in enthalpy in the form of the latent heat of fusion, heat of reaction, or others. Such enthalpy changes may be detected by thermal analysis and can be related to the processes occurring in the sample.

The main thermal techniques are differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), dynamic mechanical analyzer (DMA), heat distortion temperatures (HDT), and cone calorimetry. Thermal analysis is based on the detection of changes in the heat content (enthalpy) or the specific heat of a sample with temperature.

6.7.1 Differential Scanning Calorimetry (DSC)

DSC is a technique which is part of a group of techniques called thermal analysis (TA). As thermal energy is supplied to the sample, its enthalpy increases and the temperature rises by an amount determined by the specific heat of the sample. The specific heat of a material changes slowly with temperature in a particular physical state, but alters sharply or discontinuously when a change of state takes place. Apart from increasing the sample temperature, the supply of thermal energy may also induce physical or chemical changes in the sample (e.g., melting or decomposition) accompanied by a change in enthalpy in the form of the latent heat of fusion, heat of reaction, or others. Such enthalpy changes may be detected by thermal analysis and can be related to the processes occurring in the sample.

Anmerkungen

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Sichter
(Klgn), SleepyHollow02


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