The effects of diethyl ether, diethylene glycol dimethyl ether, and dimethyl carbonate addition on the physical and thermodynamic properties of biodiesel

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dc.authorid0000-0003-3947-5698
dc.authorid0000-0003-0676-3028
dc.contributor.authorOsman, Sibel
dc.contributor.authorSara, Osman Nuri
dc.contributor.authorKavakli, Aycan Altun
dc.contributor.authorLungu, Mioara-Jeanina
dc.date.accessioned2026-02-08T15:14:58Z
dc.date.available2026-02-08T15:14:58Z
dc.date.issued2024
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractIn the present study, density, viscosity, surface tension, and refractive indices of binary mixtures of biodiesel + diethyl ether (DEE), diethylene glycol dimethyl ether (DEGDME), and dimethyl carbonate (DMC), which are used as biodiesel additives, have been measured over the whole range of concentration from 288.15 to 323.15 K and at atmospheric pressure. The density and kinematic viscosity values of the binary mixtures, prepared with different mole fractions of DEE, DEGDME, and DMC, were compared with the limits specified by the biodiesel fuel standard (EN14214). Furthermore, experimentally measured density values were utilized to define a first-order polynomial equation for estimating the densities of the prepared binary mixtures. Excess molar volumes (VE), excess thermal expansion coefficient (alpha pE), excess Gibbs energy of activation of the viscous flow (triangle G*E), deviations in kinematic viscosity (Delta nu), surface tension (Delta sigma), and refractive index (Delta nD) values were calculated. These deviation values from ideality were adjusted to a Redlich-Kister (R-K) polynomial equation and the obtained coefficients in the equation were reported. VE values were negative for biodiesel + DEE while positive values were obtained for biodiesel + DEGDME and DMC. Moreover, the values of Delta nu were negative for all mixtures of biodiesel + DEE, DEGDME, and DMC. The obtained results were analyzed with regard to intermolecular interactions and structural effects between both similar and dissimilar molecules.
dc.identifier.doi10.1007/s10973-024-13737-w
dc.identifier.endpage14513
dc.identifier.issn1388-6150
dc.identifier.issn1588-2926
dc.identifier.issue23
dc.identifier.scopus2-s2.0-85209758134
dc.identifier.scopusqualityQ1
dc.identifier.startpage14489
dc.identifier.urihttps://doi.org/10.1007/s10973-024-13737-w
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5540
dc.identifier.volume149
dc.identifier.wosWOS:001364474900001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of Thermal Analysis and Calorimetry
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectBiodiesel
dc.subjectThermodynamic properties
dc.subjectFuel additives
dc.subjectPhysicochemical properties
dc.titleThe effects of diethyl ether, diethylene glycol dimethyl ether, and dimethyl carbonate addition on the physical and thermodynamic properties of biodiesel
dc.typeArticle

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