Dispersive and Fourier transform near-infrared spectroscopy of polymeric materials

✍ Scribed by Gilbert Lachenal

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 635 KB
• Volume: 9
• Category: Article
• ISSN: 0924-2031
• DOI: 10.1016/0924-2031(94)00054-k

✦ Synopsis

Near-infrared (NIR) spectroscopy has been extensively and successfully used in food industries, but it has never been widely used in the chemical industry or chemical laboratories. For process and quality control measurements, NIR spectroscopy, with the development of new, rugged, reliable techniques, opens the possibility of rapid, non-destructive multicomponent analysis. Applications using chemometric methods are numerous, but NIR spectra of polymers also contain information on constitution, conformation, crystallinity, intermolecular and intramolecular interactions. Some absorbance bands can be directly used to monitor chemical reactions, water content or crystallinity. NIR spectroscopy, which requires little or no sample preparation, presents a great potential to improve our understanding of polymeric materials. Some examples of process control determination of moisture content and changes of crystallinity monitored by Fourier transform NIR, will be briefly presented.