Thermal methods of analysis have a very long history but were not applied to polymers till after the second world war. Since then, application of Differential Thermal Analysis (DTA), Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) have grown so rapidly that no well founded polymer laboratory is without at least one of them. Studies in the degradation of polymers are greatly facilitated by TA methods, which may readily be used in conjunction with other smoke measurements to provide especially powerful analytical tools. The growth of engineering applications, especially for thermoplastics and composites has spawned much work on thermomechanical methods. Computers are now widely used both to control equipment and also to calculate valuable information from the experimental results. Other TA techniques have been or are potentially useful to the polymer technologist.
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