Raman spectroscopy is a powerful tool that is used as a means of structural identification in materials science.Over the past few years there have been tremendous advances in Raman spectroscopy applied to the characterization of polymers and polymer composites.For example, there are many challenges associated with the microstructure and physical properties relationship at both the micro and macro scale. Raman Spectroscopy Applied to Polymer Composites and Nanocomposites summarizes in a comprehensive manner recent research accomplishments in this important area. The book offers an in depth study of the current state of the art covering the fundamentals, as well as recent experimental developments. Almost all the characterisation techniques coupled in situ with Raman spectroscopy are discussed in detail.The book discusses various aspects of polymer applications, as well as related topics in polymer composites and nanocomposites. Filled polymers, reinforced plastics, thermoplastics, thermosets, elastomers, and rubbers are also discussed. The book is designed to address all aspects of Raman spectroscopy with respect to polymers and measurements, and experimental conditions and it contains numerous case study examples to illustrate how Raman spectroscopy coupled in situ with more classical techniques can be useful to enhance material performance. It will assist researchers to solve fundamental and applied problems in the future development of materials.