Chapter 8. Calorimetry and thermal analysis for the study of polymer properties - Archive ouverte HAL
Chapitre D'ouvrage Année : 2023

Chapter 8. Calorimetry and thermal analysis for the study of polymer properties

Résumé

Nowadays, the production and intensive use of plastics having remarkable properties, such as transparency, lightness, resistance to water, solvents and corrosive agents, insulating character, and thermal stability, lead to the study of their physical and chemical properties and in particular to those that are strongly dependent on temperature. Among these properties, one can mention glass transition (Tg), enthalpy of melting and crystallization, decomposition temperature, thermal stability, and dimensional changes (such as softening, expansion, and shrinkage). This chapter shows how polymers can be fully and very accurately characterized by using thermal analysis and calorimetry. Various examples are given in order to illustrate the potential of thermal analysis and calorimetry for measuring their physical properties, different types of transitions, aging, thermal stability, oxidation, degradation mechanism, effect of plasticizers, influence of synthesis, or shaping conditions. These examples will be presented using the following techniques: differential scanning calorimetry (DSC), pressurized-DSC, Calvet calorimetry, thermogravimetric analysis (TGA), thermomechanical analysis (TMA), TGA coupled to mass spectrometry (TGA-MS), TGA coupled to Fourier-transform infrared spectroscopy (TGA-FTIR), and TGA coupled to gas chromatography and mass spectrometry (TGA-GC-MS). The development of all these techniques and couplings between different instruments has greatly contributed to the understanding of the physical and chemical phenomena that occur within materials when they are synthesized, shaped, heated, burned, or degraded. These techniques are nowadays increasingly used in the field of plastic recyclability. They undeniably allow a better understanding of the mechanisms involved in the new recycling processes explored in research and development laboratories.
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Dates et versions

hal-04752240 , version 1 (24-10-2024)

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Rodica Chiriac, François Toche, Olivier Boyron. Chapter 8. Calorimetry and thermal analysis for the study of polymer properties. Aline Auroux; Ljiljana Damjanovic-Vasilic. Thermal Analysis and Calorimetry, De Gruyter, pp.245-292, 2023, 978-3-11-059043-2. ⟨10.1515/9783110590449-008⟩. ⟨hal-04752240⟩
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