14271 IUPAC Gold Book - polymer co-crystallisation 10.1351/goldbook.14271 14271 current 1 Crystallization, within the same crystal, of a polymer and at least one other component. The following possibilities need to be considered: (1) a polymer and a low-molar-mass species forming a polymer clathrate; (2) a molecular complex of different polymers (see polymer co-crystal); and (3) different polymers displaying some degree of isomorphism (isomorphous polymer co-crystal). isomorphous polymer co-crystal https://goldbook.iupac.org//terms/view/14235 polymer clathrate https://goldbook.iupac.org//terms/view/14239 polymer co-crystal https://goldbook.iupac.org//terms/view/14240 PAC, 2011, 83, 1831. 'Definitions of terms relating to crystalline polymers (IUPAC Recommendations 2011)' on page 1864 (https://doi.org/10.1351/PAC-REC-10-11-13) https://goldbook.iupac.org/terms/view/14271/html https://goldbook.iupac.org/terms/view/14271/json https://goldbook.iupac.org/terms/view/14271/plain Citation: 'polymer co-crystallisation' 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.14271 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. 2026-05-17T21:39:53+00:00