Influence of the Dispersed Phase Distribution on the Electrical Conductivity of Liquid O/W Model and Dairy Emulsions

✍ Scribed by Olivier Robin; Michel Britten; Paul Paquin

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 681 KB
• Volume: 167
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1994.1375

✦ Synopsis

The influence of the dispersed phase volume fraction ((0.01 \leqslant) (\phi \leqslant 0.4)) and emulsification parameters ((8 \leqslant P \leqslant 76 \mathrm{MPa}) and (35 \leqslant T \leqslant 100^{\circ} \mathrm{C}) ) on the relative electrical conductivity (\left(\sigma_{\mathrm{s}} / \sigma_{2 \mathrm{~s}}\right)) of dairy model emulsions, reconstituted milk and creams, and commercial chocolate milks was studied. This study was based both on the use of statistically analyzed experimental designs and classical conductivity models of dispersed systems (Rayleigh-Wiener, Bruggeman, and Böttcher-Landauer). Furthermore, a simple approximation, based on Eveson's work on the relative viscosity of dispersed systems and derived from the Rayleigh-Wiener equation, was also proposed. This equation describes the electrical conductivity of dispersed systems composed of (n) classes of dispersed droplets,