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1 March 1992 Near-infrared microscope technique for obtaining quantitative and qualitative aqueous surfactant phase-diagram information from a single sample preparation
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Proceedings Volume 1575, 8th Intl Conf on Fourier Transform Spectroscopy; (1992) https://doi.org/10.1117/12.56494
Event: Eighth International Conference on Fourier Transform Spectroscopy, 1991, Lubeck-Travemunde, Germany
Abstract
A technique for studying the phase behavior of aqueous surfactant systems using near-infrared (NIR) microspectroscopy has been developed. All the phases which exist along a particular isotherm are formed by creating an interface between water and surfactant within a long (55 mm) 25-micrometers pathlength fused silica cell, and allowing the components to diffuse together. The temperature of the cell is controlled to within 0.1 degree(s)C between 25 and 85 degree(s)C. Analysis of the entire composition range is achieved using a Fourier transform infrared (FT- IR) spectrometer equipped with a CaF2 beam splitter, a tungsten-halogen source, and an infrared microscope with a InSb detector. The intensity of the water bend-stretch combination band at 5175 cm-1 is shown to be useful for quantitation. A study of the octyldimethylphosphine oxide/water system illustrates the quantitative potential of this technique.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Curtis A. Marcott, Richard L. Munyon, and Robert G. Laughlin "Near-infrared microscope technique for obtaining quantitative and qualitative aqueous surfactant phase-diagram information from a single sample preparation", Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); https://doi.org/10.1117/12.56494
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