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<p>Consumer opinions of household detergents are influenced by the appearance, handling, and stability of the foams that they produce. Therefore, developing rheometer methods to characterise household detergent foams is of great importance for product development, so that successful product traits can be quantified and new formulations can be tested against known benchmarks. Here, we develop methods for measuring the rheological properties of foams created using common brands of washing-up liquids. We use a commercially available rheometer, the Anton Paar MCR702e, with the Powder Rheometry Flow Cell module acting as a wide-gap concentric cylinder geometry. Our results for complex shear modulus and yield stress show good agreement with previous studies of foams and emulsions, demonstrating that this system can reliably characterise foam rheology. We explore the physical mechanisms that might cause rheological differences between foams, with a view to informing product development and further research.</p>

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Rheometer methods for characterising and comparing foams: an example using household detergents

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月7日

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  • Ceri Allgood,
  • Thomas J. Jones,
  • Stephen C. Boothroyd

摘要

Consumer opinions of household detergents are influenced by the appearance, handling, and stability of the foams that they produce. Therefore, developing rheometer methods to characterise household detergent foams is of great importance for product development, so that successful product traits can be quantified and new formulations can be tested against known benchmarks. Here, we develop methods for measuring the rheological properties of foams created using common brands of washing-up liquids. We use a commercially available rheometer, the Anton Paar MCR702e, with the Powder Rheometry Flow Cell module acting as a wide-gap concentric cylinder geometry. Our results for complex shear modulus and yield stress show good agreement with previous studies of foams and emulsions, demonstrating that this system can reliably characterise foam rheology. We explore the physical mechanisms that might cause rheological differences between foams, with a view to informing product development and further research.