{"term":{"id":"09599","title":"heterogeneous degradation","longtitle":"IUPAC Gold Book - heterogeneous degradation","doi":"10.1351\/goldbook.09599","code":"09599","status":"current","definitions":[{"id":1,"text":"Degradation or biodegradation occurring at different rates depending on the location within a matrix.","notes":{"1":"Heterogeneous degradation is observed when the soluble degradation by-products that participate in the autocatalysis of the hydrolytic degradation of lactic acid-based polyester matrices are degraded faster than they diffuse outside."},"sources":["PAC, 2020, 92, 193. 'Nomenclature and terminology for linear lactic acid-based polymers (IUPAC Recommendations 2019)' on page 208 (https:\/\/doi.org\/10.1515\/pac-2017-1007)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/09599\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/09599\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/09599\/plain"},"citation":"Citation: 'heterogeneous degradation' 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.09599","license":"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.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"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.","accessed":"2026-07-24T22:54:10+00:00"}}