Fourier transform near-infrared Raman nuclear magnetic resonance

Infrared and nuclear magnetic resonance spectroscopy are the most important spectroscopic methods for analyzing coating materials. Near infrared Fourier transform (NIRFT) Raman spectroscopy [10.8] also has great potential, particularly for aqueous systems. UV/VIS spectroscopy is used only in exceptional cases, e.g., to determine light protection agents (UV absorbers). 

Because the IV is a measure of the relative unsaturation of a compound or sample, other analytical techniques (e.g., gas chromatography of FA composition, AOCS Cd lc-85) can be used to estimate the value. Interest in recent years has focused on spectroscopic techniques for the rapid determination of TV. Fourier transform (FT)-near-infrared, near-infrared, FT-Raman, and H and nuclear magnetic resonance (NMR) spectroscopic techniques have all been investigated (Ng and Gee, 2001). The most promising results have been obtained with FT-near-infrared spectroscopy, which only takes a few minutes to determine the iodine value (Cox et al., 2000). 

Many spectroscopic methods, such as atomic absorption, Auger, electron spin resonance, Fourier transform infrared, laser photopyroelectrie effect, mass, Mossbauer, near infrared, nuclear magnetic resonance, positron annihilation lifetime, Raman, time-of-flight secondary mass, x-ray, x-ray photoelectron, and UV were used in various studies of PVC. The relevance and usefulness of these methods is discussed in detail elsewhere. ... 

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