thermal analysis of polymers

In this fully updated and revised second edition the authors provide the newcomer and the experienced practitioner with a balanced and comprehensive insight into all important DSC methods, including a sound presentation of the theoretical basis of DSC and TMDSC measurements. Emphasis is layed on instrumentation, the underlying measurement principles, metrologically correct calibrations, factors influencing the measurement process, and on the exact interpretation of the results. The information given enables the research scientist, the analyst and experienced laboratory staff to apply DSC methods successfully and to measure respective properties correctly.

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Provides the background needed for accurately carrying out and interpreting measurements, especially Differential Scanning Calorimetry (DSC) measurements. DLC: Polymers – Thermal properties.

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Thermal Analysis of Polymeric Materials systematically treats macroscopic measurements by thermal analysis and the quantitative link to microscopic, molecular structure and mobility. Reversible and irreversible thermodynamics, kinetics, quantum mechanics, and statistical thermodynamics are the roots of the described thermal analysis. The book aims to broaden readers’ understanding of materials and the connection of flexible macromolecules (polymers) to small molecules and rigid macromolecules (minerals, salts, and metals). An effort is made to discover how the long, flexible molecules fit into their small phases which are characterized as microphases or nanophases. Their order ranges from amorphous to mesophase-like and crystalline. Ultimately, it is shown that the basic structure-property-processing triangle is connected to the better-known types of molecules and their common macroscopic phases.

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“Sample Controlled Thermal Analysis” (SCTA) defines the branch of thermal analysis in which a feedback from the sample is used to control its heating or cooling. It is therefore the sample itself which determines its own heating and cooling conditions, as the name implies. This approach is a real breakthrough in the field of thermal analysis. It has the advantage, compared with conventional thermal analysis, of eliminating uncertainties due to thermal effects in the sample container, improving resolution, and accurately determining reaction temperatures and accurate kinetic data. SCTA has, since its introduction in the early 1970′s, been used in many studies both on inorganic and to a certain extent organic (polymers) compounds with the aim of studying the temperature, type and kinetics of reactions taking place during heating and cooling; in the case of ceramics and adsorbents SCTA has even been used in the synthesis of materials with specific properties. These techniques are now also available in commercial thermal analysis instruments.
Sample Controlled Thermal Analysis gives a short presentation of the spirit and history of SCTA and then focuses on: basic SCTA techniques, applications of SCTA in kinetic studies and applications in the study of ceramics, adsorbents and catalysts. Finally the expected future development of SCTA is discussed.
This book is an invaluable reference for materials scientists, chemists, geologists, and engineers involved in the development of new materials, the manufacturing processes and quality control. It is also useful for research in solid state chemistry, materials science, materials in general, and analytical chemistry. Producers of thermoanalytical equipment and manufacturers of catalysts, technological ceramics and adsorbents for industrial or environment applications will find this an important resource.

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Thermal Analysis (TA) has become an indispensable family of analytical techniques in the polymer research. The increased importance of these techniques can be seen as the result of three more or less parallel developments:

• a tempestuous development of TA measuring techniques in combination with a high degree of automation,
• the strongly increased understanding of the underlaying theory and,
• the increasing knowledge of the relation between the polymers’ chemical structure and their physical properties.

These areas are still in their developmental stages, especially the third area. The increasing knowledge of the dependence of physical properties on chemical structure just accentuated more and more the need for accurate thermoanalytical measurements, and this knowledge is very important for the first stages of the development of new polymeric systems. Besides, the contribution of TA remains necessary for the technical and commercial development of such a new polymer system. The use of the various TA techniques in these processes is described in this book in nine chapters, while chapter ten illustrates the information obtained about different polymers during special case studies.

This book illustrates in this way, applications of a wide variety of TA techniques whilst it is written from a materials characterisation rather than from a TA point of view with attention being paid to the chemical structure/physical properties correlations.

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