The Challenge: Product chemists lack mathematical models to describe interactions within complex fluid mixtures. Consumer foams and gels—such as the familiar products from Gain®, Dawn®, Tide®, Olay®, Gillette®, Pantene®, and other P&G brands—depend on the
stability of complex fluids. This is particularly true for liquids or gels that contain particles of different sizes in suspension. How these “polydisperse” mixtures move and break down is poorly understood, a challenge for product manufacturers trying to create better, longer-lasting products.
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