This book reviews the various thermal methods used for the characterisation of polymer properties and composition. All these methods study the properties of polymers as they change with temperature.The methods discussed in this book are: differential photocalorimetry, differential scanning calorimetry, dielectric thermal analysis, differential thermal analysis, dynamic mechanical analysis, evolved gas analysis, gas chromatography, gas chromatography combined with mass spectrometry, mass spectrometry, microthermal analysis, thermal volatilisation, thermogravimetric analysis and thermomechanical analysis.Each technique is discussed in detail and examples of the use of each technique are also given. Each chapter has an extensive list of references so that the reader can follow up topics of interest.This book will be a useful reference for those who already use any of these thermal methods but will also be of interest to undergraduates and those who are just starting to use these techniques.