DETERGENTS AND THEIR PROPERTIES BEN HANKAMER ... - 2dx

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INTRINSIC CURVATURE HYPOTHESIS (Gruner 1985) According to the ‘intrinsic curvature hypothesis’ (Gruner, 1985) amphiphiles form supramolecular structures in water due to the hydrophobic effect (Tanford, 1980) and their shape. REFERENCES 1. ISRAELACHVILI (1991) INTERMOLECULAR <strong>AND</strong> SURFACE FORCES (2/E) 2. ISRAELACHVILI, MITCHELL & NINHAM 1977 BBA470, 185. 3. GRUNER, 1985. INTRINSIC CURVATURE HYPOTHESIS FOR BIOMEMBRANE LIPID COMPOSITION: A ROLE FOR NONBILAYER LIPIDS. PNAS 82:3665 4. TANFORD, C., 1980. THE HYDROPHOBIC EFFECT. WILEY, NEW YORK.
WATER, AMPHIPHILES <strong>AND</strong> HYDROPHOBIC INTERACTIONS 1. Water forms a highly ordered network of intermolecular hydrogen bonds. 2. It is the strength of all of the hydrogen bonds combined that give water its liquid properties. 3. Polar or hydrophilic substances dissolve in water because they form hydrogen bonds and electrostatic interactions with water molecules. 4. Non-polar or hydrophobic substances are unable to form these interactions and consequently are immiscible with water. 5. Addition of non-polar substances to water disrupts intermolecular hydrogen bonds of water molecules and creates a cavity which is devoid of water. At the surface of the cavity, water molecules rearrange in an orderly manner.
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DETERGENTS AND THEIR PROPERTIES BEN HANKAMER ... - 2dx

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