{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T14:17:15Z","timestamp":1775053035952,"version":"3.50.1"},"reference-count":23,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2024,2,20]],"date-time":"2024-02-20T00:00:00Z","timestamp":1708387200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Ministry of Education and Science of the Russian Federation Program","award":["075-03-2024-118\/1"],"award-info":[{"award-number":["075-03-2024-118\/1"]}]},{"name":"Ministry of Education and Science of the Russian Federation Program","award":["10.54499\/LA\/P\/0008\/2020"],"award-info":[{"award-number":["10.54499\/LA\/P\/0008\/2020"]}]},{"name":"Ministry of Education and Science of the Russian Federation Program","award":["10.54499\/UIDP\/50006\/2020"],"award-info":[{"award-number":["10.54499\/UIDP\/50006\/2020"]}]},{"name":"Ministry of Education and Science of the Russian Federation Program","award":["10.54499\/UIDB\/50006\/2020"],"award-info":[{"award-number":["10.54499\/UIDB\/50006\/2020"]}]},{"name":"Ministry of Education and Science of the Russian Federation Program","award":["10.54499\/CEECINST\/00102\/2018\/CP1567\/CT0026"],"award-info":[{"award-number":["10.54499\/CEECINST\/00102\/2018\/CP1567\/CT0026"]}]},{"name":"FCT\/MCTES (Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia and Minist\u00e9rio da Ci\u00eancia, Tecnologia e Ensino Superior","award":["075-03-2024-118\/1"],"award-info":[{"award-number":["075-03-2024-118\/1"]}]},{"name":"FCT\/MCTES (Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia and Minist\u00e9rio da Ci\u00eancia, Tecnologia e Ensino Superior","award":["10.54499\/LA\/P\/0008\/2020"],"award-info":[{"award-number":["10.54499\/LA\/P\/0008\/2020"]}]},{"name":"FCT\/MCTES (Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia and Minist\u00e9rio da Ci\u00eancia, Tecnologia e Ensino Superior","award":["10.54499\/UIDP\/50006\/2020"],"award-info":[{"award-number":["10.54499\/UIDP\/50006\/2020"]}]},{"name":"FCT\/MCTES (Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia and Minist\u00e9rio da Ci\u00eancia, Tecnologia e Ensino Superior","award":["10.54499\/UIDB\/50006\/2020"],"award-info":[{"award-number":["10.54499\/UIDB\/50006\/2020"]}]},{"name":"FCT\/MCTES (Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia and Minist\u00e9rio da Ci\u00eancia, Tecnologia e Ensino Superior","award":["10.54499\/CEECINST\/00102\/2018\/CP1567\/CT0026"],"award-info":[{"award-number":["10.54499\/CEECINST\/00102\/2018\/CP1567\/CT0026"]}]},{"name":"Scientific Employment Stimulus\u2014Institutional Call","award":["075-03-2024-118\/1"],"award-info":[{"award-number":["075-03-2024-118\/1"]}]},{"name":"Scientific Employment Stimulus\u2014Institutional Call","award":["10.54499\/LA\/P\/0008\/2020"],"award-info":[{"award-number":["10.54499\/LA\/P\/0008\/2020"]}]},{"name":"Scientific Employment Stimulus\u2014Institutional Call","award":["10.54499\/UIDP\/50006\/2020"],"award-info":[{"award-number":["10.54499\/UIDP\/50006\/2020"]}]},{"name":"Scientific Employment Stimulus\u2014Institutional Call","award":["10.54499\/UIDB\/50006\/2020"],"award-info":[{"award-number":["10.54499\/UIDB\/50006\/2020"]}]},{"name":"Scientific Employment Stimulus\u2014Institutional Call","award":["10.54499\/CEECINST\/00102\/2018\/CP1567\/CT0026"],"award-info":[{"award-number":["10.54499\/CEECINST\/00102\/2018\/CP1567\/CT0026"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>In this study, we propose an approach to the synthesis of new biodegradable polymer materials based on renewable raw feedstock (betulin) and derivatives of hydroxycarboxylic acids using a catalyst\/catalytic system (\u03b3-Al2O3, \u03b3-Al2O3\/TBHP) that is safe for health and the environment. The resulting polymers are linear thermoplastic polymers that undergo collapse upon melting in the presence of atmospheric oxygen. Moreover, these polymers demonstrate non-toxicity towards a range of Gram-positive and Gram-negative bacteria. The polycondensation of betulin with butyl lactate is particularly noteworthy.<\/jats:p>","DOI":"10.3390\/ma17050981","type":"journal-article","created":{"date-parts":[[2024,2,21]],"date-time":"2024-02-21T06:50:22Z","timestamp":1708498222000},"page":"981","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["New Biodegradable Copolymers Based on Betulin and Hydroxycarboxylic Acid Derivatives"],"prefix":"10.3390","volume":"17","author":[{"given":"Alexey","family":"Zinovyev","sequence":"first","affiliation":[{"name":"Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0181-069X","authenticated-orcid":false,"given":"Alina","family":"Gorbunova","sequence":"additional","affiliation":[{"name":"Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]},{"given":"Anna","family":"Chernova","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9913-4671","authenticated-orcid":false,"given":"S\u00f3nia A. C.","family":"Carabineiro","sequence":"additional","affiliation":[{"name":"LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"given":"Ekaterina","family":"Poletykina","sequence":"additional","affiliation":[{"name":"Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]},{"given":"Anastasia","family":"Bugaeva","sequence":"additional","affiliation":[{"name":"School of Earth Sciences and Engineering, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]},{"given":"Viktor","family":"Novikov","sequence":"additional","affiliation":[{"name":"Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5150-6787","authenticated-orcid":false,"given":"Ekaterina","family":"Kolobova","sequence":"additional","affiliation":[{"name":"Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9034-4733","authenticated-orcid":false,"given":"Alexey","family":"Pestryakov","sequence":"additional","affiliation":[{"name":"Research School of Chemistry and Applied Biomedical Sciences, National Research Tomsk Polytechnic University, Lenin Av. 30, 634050 Tomsk, Russia"}]}],"member":"1968","published-online":{"date-parts":[[2024,2,20]]},"reference":[{"key":"ref_1","first-page":"1","article-title":"Betulin and Its Derivatives. 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