Thermoanalytical tools

DMA is a very useful thermoanalytical tool for studying the structure-property relationship versus performance of polymeric materials. The important information concerning relaxation transitions occurring on a molecular scale can be derived by subjecting polymers to a small amplitude cyclic deformation. Data obtained over a broad temperature range help to understand the influence of one polymer on the properties of another polymeric component... 

PLS modeling is a very powerful chemometric tool for detection and quantification of the relationships between emission and their impact on the environment. The chemometric solution could be confirmed by independent thermoanalytical investigations. 

Epple, E. Cammenga, H.K. Temperature resolved x-ray diffractometry as a thermoanalytical method a powerful tool for determining solid state reaction kinetics. J.Therm. Anal. 1992, 38, 619-626. 

First, how can you analyse a mixture of processed minerals such as a cement Although X-ray diffraction might tell you the different minerals present and atomic absorption spectrometry could measure the elements quantitatively, this does not help to analyse how the cement would behave in practice. For this we need to compare the behaviour under conditions of mechanical and thermal stress and the thermoanalytical techniques of TG, DTA and TMA are important tools for doing this. ... 

Spectroscopic studies at variable temperatures have become an important tool for the characterization of the physical structure of polymers. Especially in combination with thermoanalytical DTA or DSC measurements short-time spectroscopic FTIR investigations in controlled heating or cooling experiments provide a detailed picture of the structural changes as a function of temperature. Any variations of spectroscopic parameters such as intensity, wavenumber position and band shape directly reflect the temperature dependence of the vibrational behaviour of the investigated polymer as a consequence of changes in the inter- and intramolecular interactions and the state of order The vibrational spectra of polymers recorded in selected... 

Many experimental tools and techniques have been developed to determine the chemical composition of the bulk material and to characterize the surface of substances under a wide variety of conditions. Most of these have been described in detail elsewhere in this series. Although these methods are not within the scope of this chapter, the results are necessary to determine the starting points or conditions for the methods described herein. Applications of thermal analysis to the quality of starting materials are deferred until the more extensive discussion of thermoanalytical methods in the section entitled Determining the Chemical and Structural Aspects. ... 

Thermoanalytical methods have been frequently employed in the characterization of complex samples such as minerals and clays [6] and carbonate stones used in the construction of monuments [7]. They have become a routine analytical tool for the characterization of new compounds in the pharmaceutical industry, where molecules are frequently prepared as hydrates or pseudosolvates to ensure good water solubility and good stability in moist environments [8]. Biochemical and biological applications of thermal analysis are also the subject of a recent review [9]. 

In conclusion, thermoanalytical methods are powerful tools to determine safety-related thermal properties of azides. Whenever possible, we strongly recommend performing DSC measurements of potentially energetic azides as soon as a few milligrams of substance are available. The combination of DSC data on decomposition temperature and... 

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