An adjective describing a chain macromolecule that behaves in a hydrodynamic field
as though the solvent within the domain of the macromolecule were progressively more
immobilized with respect to the macromolecule in the direction from its outer fringes
inward. A
freely draining macromolecule and a
non-draining macromolecule are two extremes of the concept of a partially draining macromolecule.
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