Chemistry Reference
In-Depth Information
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Expanded coil
Expanded coil
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Acid -
net positive
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Base -
net negative
charge
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Anionic
surfactant
Cationic
surfactant
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Protein at zero
point of charge-
collapsed coil
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Excess
Excess
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Collapsed coil
Collapsed coil
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Expanded coil
Figure 7.8.
A representation of the collapse and charge reversal of proteins with change of
pH and adsorption of surfactant of opposite charge.
7.5. POLYMERS, SURFACTANTS, AND SOLUBILIZATION
As discussed in Chapter 6, a useful characteristic of many micellar systems is their
ability to solubilize water-insoluble materials such as hydrocarbons, dyes, flavors,
and fragrances. Surfactant-polymer complexes, like polymeric surfactants, have
