Foams - Improving foam stability
3 important questions on Foams - Improving foam stability
How can a denser film be formed?
Full coverage of the interface
How can a stronger interfacial film be formed?
Network formation of the molecules at the surface. (+)proteins and (-)polysaccharides network in original solution (not possible to add after) --> electrostatic attraction --> aggregation --> complexes and coacervates. Stability at interface.
How can the viscosity of the aqueous films be increased?
Addition of polysaccharides increases the viscosity. During drainage of water from the films, an increase in the concentration of polysaccharide may even provide gel formation. Should not interact with other molecules. Will prevent the water from draining down, as it has the ability to hold water.
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