Review on application of Raman spectroscopy in polymer preparation and additive distribution analysis
Polymer preparation processes and additive concentration/distribution determine the properties of a polymer material.Raman spectroscopy is a powerful technique for this characterization.The fundamental of Raman spectroscopy,advanced techniques derived from conventional Raman spectroscopy,such as surface enhanced Raman spectroscopy,Raman spectroscopic imaging and laser microscopic confocal Raman spectroscopy are presented,and their applications for polymer processing and polymerization are summarized.Properties of polymer additives(emulsifiers,dyes and other additives)including concentration,distribution and migration studied using various Raman techniques are also reviewed.In addition,the outlook for the development of Raman spectroscopy techniques is also discussed.