04978 IUPAC Gold Book - quality of solvent 10.1351/goldbook.Q04978 Q04978 current related: thermodynamic quality of solvent 1 A qualitative characterization of the polymer–solvent interaction. A solution of a polymer in a 'better' solvent is characterized by a higher value of the second virial coefficient than a solution of the same polymer in a 'poorer' solvent. polymer–solvent interaction https://goldbook.iupac.org/terms/view/P04746 virial coefficient https://goldbook.iupac.org/terms/view/V06625 Purple Book, 1st ed., p. 57 (http://old.iupac.org/publications/books/author/metanomski.html) https://goldbook.iupac.org/terms/view/Q04978/html https://goldbook.iupac.org/terms/view/Q04978/json https://goldbook.iupac.org/terms/view/Q04978/plain Citation: 'quality of solvent' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.Q04978 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-06-14T13:04:15+00:00