Symmetric star poly(substituted glycolide) homopolymers and their surface properties

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dc.contributor.authorColak, Yonca
dc.contributor.authorBelen, Sema Nur
dc.contributor.authorCetin, Duygu
dc.contributor.authorCengiz, Ugur
dc.contributor.authorMert, Olcay
dc.date.accessioned2025-01-27T21:01:52Z
dc.date.available2025-01-27T21:01:52Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractWell-defined star poly(substituted glycolide) (s-PSG) homopolymers with predetermined lengths and numbers of arms, which are alternatives to polylactides and polyglycolides, may offer great opportunity for the modulation of their physical properties, such as glass transition temperature (Tg), crystallinity, hydrophobicity, and surface characteristics due to their geometric and structural differences. Herein, we report the synthesis of s-PSG homopolymers, including a four-armed symmetrical poly(l-diisopropyl glycolide) (4s-PLDIPG) and poly(l-diisobutyl glycolide) (4s-PLDIBG) from the ring opening polymerization (ROP) of their monomers in the presence of tin(ii) 2-ethylhexanoate [Sn(Oct)2] as a catalyst and pentaerythritol as an initiator via a core-first approach under melt conditions. 4s-PLDIPG 8 exhibits lower Tg, melting temperature (Tm) and crystallinity % than 4s-PLDIPG 10 (Tg: 33.7 degrees C vs. 35.9 degrees C; Tm: 143.9 degrees C vs. 183.4 degrees C; Xc: 16.7% vs. 19.1%) due to its lower Mn per arm. 4s-PLDIPG 8 also has a dramatically lower Tm and crystallinity % than its linear counterpart PLDIPG 17 (Tm: 143.9 degrees C vs. 190.6 degrees C; Xc: 16.7% vs. 26.7%) due to its short arm length. As the side chain length of s-PSG homopolymers increased, there was a corresponding increase in the water contact angles and surface roughness values of the thin films, while the surface free energy decreased. This correlation between side chain length and surface properties was further validated by SEM and AFM profiles, which confirmed the impact of extended side chains on the polymer's surface characteristics.
dc.description.sponsorshipKocaeli University; Council of Higher Education (100/2000); Scientific and Technological Research Council of Turkiye (2211-C); [2018/157]
dc.description.sponsorshipThis study was financed by Kocaeli University Scientific Research Projects fund with 2018/157. We thank the Council of Higher Education (100/2000) and the Scientific and Technological Research Council of Turkiye (2211-C) for PhD scholarships for Y.C.
dc.identifier.doi10.1039/d4py01229a
dc.identifier.endpage330
dc.identifier.issn1759-9954
dc.identifier.issn1759-9962
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85211993191
dc.identifier.scopusqualityQ1
dc.identifier.startpage317
dc.identifier.urihttps://doi.org/10.1039/d4py01229a
dc.identifier.urihttps://hdl.handle.net/20.500.12428/27215
dc.identifier.volume16
dc.identifier.wosWOS:001373015700001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherRoyal Soc Chemistry
dc.relation.ispartofPolymer Chemistry
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectThermal-Properties
dc.subjectBlock-Copolymers
dc.subjectAcid Pla
dc.subjectCrystallization
dc.subjectPoly(L-Lactide)
dc.subjectPolylactide
dc.subjectPolymer
dc.subjectPoly(D,L-Lactide)
dc.subjectPolystyrene
dc.subjectDegradation
dc.titleSymmetric star poly(substituted glycolide) homopolymers and their surface properties
dc.typeArticle

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