{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T11:23:36Z","timestamp":1787657016254,"version":"build-2736575974"},"reference-count":39,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2009,2,4]],"date-time":"2009-02-04T00:00:00Z","timestamp":1233705600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Low-molecular weight poly(\u03b5-caprolactone), polylactides and copolymers of \u03b5-caprolactone and lactides were obtained by the polymerization of cyclic esters in the presence of a carnitine\/SnOct2 system. Their structures were proven by means of MALDI-TOF, IR and NMR studies. Effects of temperature, reaction time and carnitine dosage on the polymerization process were examined.<\/jats:p>","DOI":"10.3390\/molecules14020621","type":"journal-article","created":{"date-parts":[[2009,2,4]],"date-time":"2009-02-04T09:11:33Z","timestamp":1233738693000},"page":"621-632","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Polymerization of Cyclic Esters Initiated by Carnitine and Tin (II) Octoate"],"prefix":"10.3390","volume":"14","author":[{"given":"Marcin","family":"Sobczak","sequence":"first","affiliation":[{"name":"Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, ul. 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