Term: excluded volume of a macromolecule
https://doi.org/10.1351/goldbook.E02259

Definition:
The volume from which a macromolecule in a dilute solution of a macromolecule effectively excludes all other macromolecules. The excluded volume of a macromolecule depends on the Gibbs and Helmholtz energies of mixing of solvent and polymer, i.e. on the thermodynamic quality of the solvent, and is not a measure of the geometrical volume of that macromolecule.

Related Terms:
1) dilute solution (http://doi.org/10.1351/goldbook.D01739).

Source: Purple Book, 1st ed., p. 58 (http://old.iupac.org/publications/books/author/metanomski.html)

Citation: 'excluded volume of a macromolecule' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.E02259

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