{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T09:30:35Z","timestamp":1761643835044,"version":"build-2065373602"},"reference-count":65,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2025,10,27]],"date-time":"2025-10-27T00:00:00Z","timestamp":1761523200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>Polylactide (PLA) was melt blended with block copolymers of ethylene glycol and propylene glycol: a triblock copolymer (PPG-b-PEG-b-PPG) with a molar mass of 2700 g\/mol and 40 wt% PEG content, and a diblock copolymer (PPG-b-PEG) with a molar mass of 4000 g\/mol and 50 wt% PEG content. The structure as well as the thermal and mechanical properties of both amorphous and crystallized blends were investigated. Due to the copolymers\u2019 chemical composition and the resulting phase structure, the 10 wt% amorphous blends with PPG-b-PEG-b-PPG and PPG-b-PEG, with Tg values of 38 \u00b0C and 46 \u00b0C, respectively, exhibited relatively high yield stress, close to 45 MPa, along with remarkable elongation at break. Notably, the blend with the triblock copolymer showed a 70-fold increase in elongation at break compared to neat amorphous PLA. Furthermore, the tensile impact strength of the blend with the diblock copolymer surpassed that of neat PLA. Upon crystallization, the 10 wt% blends showed reduced yield stress and elongation at break; however, the elongation at break exceeded 7\u201325 times that of neat crystalline PLA. Furthermore, their tensile impact strength increased to more than three times the value of crystalline PLA.<\/jats:p>","DOI":"10.3390\/ijms262110422","type":"journal-article","created":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T09:16:07Z","timestamp":1761642967000},"page":"10422","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Modification of Polylactide with Triblock and Diblock Copolymers of Ethylene Glycol and Propylene Glycol"],"prefix":"10.3390","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7745-6020","authenticated-orcid":false,"given":"Miroslaw","family":"Pluta","sequence":"first","affiliation":[{"name":"Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1566-7206","authenticated-orcid":false,"given":"Joanna","family":"Bojda","sequence":"additional","affiliation":[{"name":"Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9232-9465","authenticated-orcid":false,"given":"Ewa","family":"Piorkowska","sequence":"additional","affiliation":[{"name":"Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,10,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Nakajima, H., Dijkstra, P., and Loos, K. 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