Foam - Decision tree foam
5 important questions on Foam - Decision tree foam
A foam (single system) is stable, how come?
A foam (single system) is unstable, how come?
- Turbid --> aggregate formation
- Fast formation but unstable --> too small
- Strong charge? --> too much repulsion
A foam (mixed system) has repulsion between the proteins and polysaccharides and forms less easy and/or is less stable, how come?
- Due to increased viscosity, proteins more slower to the interface and foam formation is inhibited
- Polymer prevents proteins to move to the interface
Increase disproportionation and coalescence
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A foam (mixed system) has attraction between the proteins and polysaccharides and is more stable, how come?
- Thicker interface --> all PS are attached to the proteins --> Prevents disproportionation and coalescence
- Thicker interface and interfacial film --> PS are attached to the proteins and excess PS in water film
A foam (mixed system) has attraction between the proteins and polysaccharides and is not more stable, how come?
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
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