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Colloïdes
Characterization of the size, zeta potential and rheological properties of colloids
A colloid is a system where one state of matter is finely dispersed in another. They typically have dimensions of less than 1 micron resulting in a very high surface-to-volume ratio. Therefore, surface chemistry plays a very important part in the study of colloidal systems.
Long-term colloidal stability is of great importance in a number of industries such as pharmaceutical, personal care, food, ceramics, paints and pigments.
Malvern provide a range of easy to use particle size, zeta potential and rheological instrumentation which can be used to study the properties of colloids across a wide range of industries. These systems and our industry and application knowledge can be used to:
- Characterize colloidal size and zeta potential in both dilute and concentrated samples
- Understand the factors influencing colloidal stability
- Improve the stability and quality of colloidal formulations
- Understand the microstructure of colloidal systems
- Simulate processing conditions to evaluate real world performance
- Ensure optimum product and process performance.
Malvern solutions for Colloids
Characterisation of Magnetically Tunable Colloidal Photonic Crystals Using the Zetasizer Nano
The Zetasizer Nano ZS system can be used to characterize the size and dispersion stability of colloidal photonic crystal solutions easily and quickly.
Dispersion Rheology
A rapid method to predict particle sedimentation in liquid dispersions.
Article: Optimizing silicone emulsion stability using zeta potential
Silicones are synthetic polymers containing a Si–O backbone. This backbone structure gives silicones unique physical properties, such as high melting...
Zeta potential in pharmaceutical formulation
Although particle size and its measurement are intuitively familiar to particle technologists, the concept of zeta potential is less widely understood...
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