Fourier Transform Infrared (FTIR) Spectroscopy for Coating Characterization and Failure Analysis

摘要

Coating formulations are a complicated mixture of inorganic and organic chemical compounds. Most coatings typically consist of a carrier solvent that is meant to evaporate, leaving behind a homogenous dispersion of binders, resins, and pigments. From a basic chemical perspective, each of these components can be further subdivided into configurations of atoms bonded together in particular combinations. These atomic configurations, called functional groups, are the basic building blocks for defining the chemistry of a particular molecule. For instance, the commonly encountered term acrylic (defined chemically as COO-R), found on the exterior label of paint cans, refers to the functional groups included in the polymeric binders in the coating.