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| Polymerization Cure Rates using FT-NIR Spectroscopy |
| Rate of reaction is an important parameter in chemical processes. The speed of reactions and the extent of completion often govern the viability of certain processes and determine the suitability of these reactions for commercial purposes. |
| Near-infrared spectroscopy takes advantage of the vibrational overtones and
combination bands present in nearly all complex molecules. Light from an FT-NIR
analyzer impinges on the sample, causing molecular vibrations at characteristic
frequencies. The light is then collected by the analyzer and is displayed as
spectra. Specific substances result in unique spectra that can be used for
identification or quantification. For the current study, spectra of three
polymer precursors were taken at various intervals during polymerization. Peak
heights at specific frequencies were measured during the experiments as a
demonstration of the analyzer’s ability to monitor polymer cure rates.
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