Adsorption - The partitioning of a chemical species between a bulk phase and an interface
Adsorption vs Absorption
Adsorption is a Surface phenomena where as Absorption is a Bulk phenomena.
Dry Crosslinked polymer network will absorb water to form hydrogel.
Proteins adsorb to a biomaterial surface
What is a Surfactant?
Surfactants are usually compounds that are amphiphilic, meaning they contain both hydrophobic and hydrophilic groups.