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The methanolysis of PBS in solution was optimised by varying temperature, catalyst loading, and methanol equivalents, giving a maximum conversion of 98% after 48\u2009h with a dimethyl succinate yield of 62%. Solvent\u2010free methanolysis of PBS and PBAT was shown to reach high conversion after 1 h, although increased temperature was required (100\u2013130\u00b0C). When the catalyst was embedded into thin films of PBS and PBAT, a significant loss of mass and a reduction in molecular weight was observed after incubation at 50\u00b0C in methanol, comparing favorably with samples of pure polymer. Some increase in degradation activity was also observed in deionized water. This work demonstrates the application of common chemical recycling techniques to increasingly relevant bio\u2010derived polyesters as well as the potential for embedded zinc catalysts to promote degradation.\n                  <\/jats:p>","DOI":"10.1002\/cssc.202502332","type":"journal-article","created":{"date-parts":[[2025,12,1]],"date-time":"2025-12-01T21:09:41Z","timestamp":1764623381000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Zinc\u2010Catalysed Depolymerization of Poly(Butylene Succinate) and Poly(Butylene Adipate\u2010\n                    <i>co<\/i>\n                    \u2010Terephthalate) and Enhanced Degradation of Catalyst\u2010Polymer Composite Films"],"prefix":"10.1002","volume":"19","author":[{"given":"Fannie","family":"Burgevin","sequence":"first","affiliation":[{"name":"Department of Chemistry University of Bath  Bath 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