Sensing emulsification processes by Photon Density Wave spectroscopy

Oliver Reich; Lena Bressel; Roland Hass

doi:10.1117/12.885894

17 May 2011 Sensing emulsification processes by Photon Density Wave spectroscopy

Oliver Reich, Lena Bressel, Roland Hass

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77532J (2011) https://doi.org/10.1117/12.885894
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

A key parameter for the monitoring of emulsification processes is the droplet size of the dispersed material. Due to relatively high concentrations of the droplets in technical applications and their micrometer size these emulsions exhibit strong light scattering. Photon Density Wave (PDW) spectroscopy is an innovative fiber-optical in-line technique for precise determination of the optical absorption and scattering properties of such highly turbid samples. From the light scattering properties (specifically the reduced scattering coefficient) mean droplet sizes can be quantified with a temporal resolution on the minute-timescale. Investigation of the influence of emulsifier concentration and stirring speed on the emulsification process demonstrate the excellent performance of PDW spectroscopy for fiber-optical in-line sensing under these demanding spectroscopic conditions.

Citation Download Citation

Oliver Reich, Lena Bressel, and Roland Hass "Sensing emulsification processes by Photon Density Wave spectroscopy", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77532J (17 May 2011); https://doi.org/10.1117/12.885894

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