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X-ray Studies Of Long-chain Fatty Acids
Nov 16, 2018

The carboxyl group is a hydrophilic group, which can form hydrogen bond with water. As the relative molecular mass increases, hydrophobic groups (hydroxyl groups) become larger and more soluble in water.

X-ray study of long chain fatty acids, proves that the molecules in the C chain in terms of sawtooth carboxyl to hydrogen bond association between two molecules, the double molecular association is regularly arrange one layer, each layer is mutual association between carboxyl, gravity is very strong, and is a weak gravity hydrocarbon between layer and layer adjacent to, each other easy to slide, this is why senior fatty acid has the lubricity.