15309 IUPAC Gold Book - cardo polymer 10.1351/goldbook.15309 15309 current 1 Polymer composed of macromolecules consisting of a single-strand main chain and many ring units, each having one atom in common with the main chain. A cardo polymer can be represented graphically as follows: A cardo polymer can also be defined as a polymer composed of macromolecules containing loop-like cyclic side groups, one ring atom of which is part of the backbone. The adjective "cardo" is derived from the Latin word for heart because the cyclic unit, together with adjacent parts of the main chain, resembles the shape of a heart with arteries. PAC, 2009, 81, 1131. 'Glossary of class names of polymers based on chemical structure and molecular architecture (IUPAC Recommendations 2009)' on page 1175 (https://doi.org/10.1351/PAC-REC-08-01-30) https://goldbook.iupac.org/terms/view/15309/html https://goldbook.iupac.org/terms/view/15309/json https://goldbook.iupac.org/terms/view/15309/plain Citation: 'cardo polymer' 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.15309 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. 2026-06-21T06:02:13+00:00