Stability of suspensions, emulsions, and foams studied by a novel automated analyzer.
The stability of dilute and concentrated dispersions (suspensions, emulsions, and foams) has been studied by a newly developed automated dispersion stability analyzer, DiStA 24. The analyzer operates by taking consecutive images of the samples studied and analyzing them by a personal computer (PC). As a result, the vertical profile of light scattered from each sample is obtained, recorded, and analyzed at time intervals preset by the computer software. In this way, the destructive processes in dispersions (sedimentation, creaming, and coalescence) can be detected well before it is possible by the naked eye and monitored automatically in the temperature range 0-50 degrees C. The new analyzer differs from the existing instruments by its simplicity and high productivity, allowing 24 samples to be measured simultaneously.
Surfactant & Colloid Group, Department of Chemistry, University of Hull, Hull HU6 7RX, U.K. t.s.horozov@hull.ac.uk
Tommy S
TS
Horozov
Bernard P
BP
Binks
D001322:Autoanalysis / Q000295:instrumentation* / Q000379:methods*; D001331:Automation; D003102:Colloids / Q000737:chemistry*; D004655:Emulsions / Q000737:chemistry; D012680:Sensitivity and Specificity; D013499:Surface Properties; D013997:Time Factors
D003102:Colloids; D004655:Emulsions