ABSTRACT
The manufacture of polymers is very interesting to the extent that it uses the full range of reactions available in general chemistry. Their analysis requires the consideration of monomers manufactured in the liquid (eventually gaseous) phase or in a solvent medium, the recycling of these solvents, and finally the polymers themselves whose polymerization can be achieved in a molten medium or solid phase. In addition to the monitoring of chemical reactions, polymers need to be characterized in terms of very particular and key physical properties related to their use and applications. Near-infrared spectroscopy by its speed, its ease of implementation, and the possibility of being used in situ is a technique of choice for the characterization of polymers. In this chapter, we will focus on these different aspects by voluntarily placing ourselves on the side of spectroscopy and the methodology of setting up an analysis.
