Menthol and organic acid-based hydrophobic deep eutectic solvents as plasticizers in biodegradable poly (lactic acid) films

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dc.authorid0000-0002-2823-0751
dc.authorid0000-0002-6777-273X
dc.contributor.authorUzun, Sukran Asgin
dc.contributor.authorDagdelen, Adnan Fatih
dc.contributor.authorGumus, Omer Yunus
dc.contributor.authorDundar, Ayse Neslihan
dc.contributor.authorSaricaoglu, Furkan Turker
dc.date.accessioned2026-02-08T15:15:17Z
dc.date.available2026-02-08T15:15:17Z
dc.date.issued2025
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractThis study examined hydrophobic deep eutectic solvents (DESs) as plasticizers for poly (lactic acid) (PLA) films, comparing their performance to plasticizers like epoxidized soybean oil (ESBO) and di(2-ethylhexyl) phthalate (DEHP). DESs were produced by mixing DL-menthol (hydrogen bond acceptor, HBA) with pyruvic acid (Pyr) and levulinic acid (Lev) (hydrogen bond donors, HBD). The densities of DESs were similar to ESBO and DEHP and exhibited low viscosity and shear-thinning behavior. Chemical and thermal analysis revealed successful production of DESs, indicated by lower melting points and hydrogen bond interactions between HBA and HBD. PLA films plasticized with DESs showed varied properties depending on plasticizer concentration. M-Pyr plasticized films had the lowest water uptake and solubility at a 5 % concentration. DESs imparted a yellowish tint to PLA films, with M-Lev showing higher b* values. Light transmission decreased with increasing plasticizer concentration, enhancing UV barrier properties. Adding 20 % M-Pyr and M-Lev to DES plasticized films enhanced their tensile strength by 21.73-80.60 % while reducing elongation at break by 45.94 % and 39.10 %, respectively. DESs also influenced puncture force, deformation, and heat seal ability. Water vapor and oxygen permeabilities of DES-plasticized PLA films were reduced by 50 % and 38.35 % at 20 % plasticizer concentration. FT-IR analysis verified DESs' compatibility with PLA, indicating negligible shifts in characteristic peaks. DESs exhibited low volatility and migration with high antioxidant capacity, making them suitable plasticizers. Menthol-based hydrophobic DESs demonstrated effectiveness as plasticizers for PLA films, improving mechanical and barrier properties while ensuring stability and low volatility.
dc.description.sponsorshipScientific and Technological Research Institution of Turkiye (TUBITAK) [122O230]; TUBITAK
dc.description.sponsorshipThis study was supported by project number 122O230 within the framework of the 3501-Career Development Program of the Scientific and Technological Research Institution of Turkiye (TUBITAK) . The authors would like to thank TUBITAK for its financial support. Some parts of this study were compiled from the master's thesis of the first author, Sukran Asgin Uzun.
dc.identifier.doi10.1016/j.fpsl.2024.101415
dc.identifier.issn2214-2894
dc.identifier.scopus2-s2.0-85211584081
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.fpsl.2024.101415
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5684
dc.identifier.volume47
dc.identifier.wosWOS:001388322000001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofFood Packaging and Shelf Life
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectHydrophobic deep eutectic solvent
dc.subjectNatural plasticizers
dc.subjectPLA
dc.subjectBiodegradable packaging
dc.titleMenthol and organic acid-based hydrophobic deep eutectic solvents as plasticizers in biodegradable poly (lactic acid) films
dc.typeArticle

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