Abstract
This chapter examines the instrumentation, sampling, and data processing aspects of infrared spectroscopy in order to develop an understanding of the basis of infrared spectroscopy as a tool for the characterization of polymers. The chapter on infrared instrumentation and sampling techniques has been modified to include innovations in instrumentation such as step-scan and focal array detector imaging interferometers. The sections on data processing and quantitative analysis have been updated to reflect the major impact in this field of fast computers with large memories. The success of every analysis depends on proper utilization of each of these components in the analysis. Infrared (IR) instrumentation has undergone a substantial number of changes as the technique has become more important for materials characterization. The quality of IR spectra is dependent on sample preparation procedures and the performance of the instrumentation. Currently, IR instrumentation being utilized are the following: dispersive instruments, multichannel dispersive instruments, multiplex instruments, and multichannel/multiplex instruments. The guidelines presented in this chapter will help in making appropriate IR measurements by yielding the analytical information necessary to solve problems.
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