Alessandro Cazonatto Galvão , João Victor Thomas Feyh , Pedro Felipe Arce , Weber da Silva Robazza
{"title":"The deviation from ideal behavior in mixtures of propylene glycol and propylene carbonate at different temperatures: Experimental results and modeling","authors":"Alessandro Cazonatto Galvão , João Victor Thomas Feyh , Pedro Felipe Arce , Weber da Silva Robazza","doi":"10.1016/j.fluid.2025.114394","DOIUrl":null,"url":null,"abstract":"<div><div>The molecular interactions within a liquid mixture reflect the degree of nonideality present in the solution. This nonideality can be evaluated through various solution properties, including density, viscosity, and refractive index. A comprehensive analysis of these properties offers valuable insights into the interactions between molecules in the mixture. The advancement of models and the validation of theories depend on the precision of these interpretations. This study presents experimental data on the density, refractive index, kinematic viscosity, and dynamic viscosity of a binary liquid mixture comprising propylene glycol and propylene carbonate. The experiments cover a complete range of solution mole fractions at different temperatures. Density data were correlated using the Peng-Robinson and CPA equations of state, yielding binary interaction parameters. The Eyring equation, combined with the NRTL activity coefficient model, was used to correlate kinematic viscosity data, also resulting in binary interaction parameters. Furthermore, the predictive capability of the Lorentz-Lorenz N-mixing rule was assessed for the refractive index data. The deviations from ideal behavior, as indicated by excess molar volume, variations in viscosity, and changes in refractive index, can be attributed to the formation and breaking of hydrogen bonds between the molecules of propylene glycol. The models employed demonstrate a strong capacity to accurately represent the experimental data.</div></div>","PeriodicalId":12170,"journal":{"name":"Fluid Phase Equilibria","volume":"595 ","pages":"Article 114394"},"PeriodicalIF":2.8000,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fluid Phase Equilibria","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378381225000640","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The molecular interactions within a liquid mixture reflect the degree of nonideality present in the solution. This nonideality can be evaluated through various solution properties, including density, viscosity, and refractive index. A comprehensive analysis of these properties offers valuable insights into the interactions between molecules in the mixture. The advancement of models and the validation of theories depend on the precision of these interpretations. This study presents experimental data on the density, refractive index, kinematic viscosity, and dynamic viscosity of a binary liquid mixture comprising propylene glycol and propylene carbonate. The experiments cover a complete range of solution mole fractions at different temperatures. Density data were correlated using the Peng-Robinson and CPA equations of state, yielding binary interaction parameters. The Eyring equation, combined with the NRTL activity coefficient model, was used to correlate kinematic viscosity data, also resulting in binary interaction parameters. Furthermore, the predictive capability of the Lorentz-Lorenz N-mixing rule was assessed for the refractive index data. The deviations from ideal behavior, as indicated by excess molar volume, variations in viscosity, and changes in refractive index, can be attributed to the formation and breaking of hydrogen bonds between the molecules of propylene glycol. The models employed demonstrate a strong capacity to accurately represent the experimental data.
期刊介绍:
Fluid Phase Equilibria publishes high-quality papers dealing with experimental, theoretical, and applied research related to equilibrium and transport properties of fluids, solids, and interfaces. Subjects of interest include physical/phase and chemical equilibria; equilibrium and nonequilibrium thermophysical properties; fundamental thermodynamic relations; and stability. The systems central to the journal include pure substances and mixtures of organic and inorganic materials, including polymers, biochemicals, and surfactants with sufficient characterization of composition and purity for the results to be reproduced. Alloys are of interest only when thermodynamic studies are included, purely material studies will not be considered. In all cases, authors are expected to provide physical or chemical interpretations of the results.
Experimental research can include measurements under all conditions of temperature, pressure, and composition, including critical and supercritical. Measurements are to be associated with systems and conditions of fundamental or applied interest, and may not be only a collection of routine data, such as physical property or solubility measurements at limited pressures and temperatures close to ambient, or surfactant studies focussed strictly on micellisation or micelle structure. Papers reporting common data must be accompanied by new physical insights and/or contemporary or new theory or techniques.