Thermophysical study of the binary mixtures of N,N-dimethylacetamide with 2-propanol and 2-butanol

Mrad, Sahar; Lafuente, Carlos; Giner, Beatriz; Hichri, Monia

doi:10.1016/j.tca.2017.06.023

Cited by 16 publications

(5 citation statements)

References 59 publications

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“…On the other hand, the influence of structural factors is more related to the volumetric behavior. Figures and show a graphical comparison of excess molar volumes − with surface tension deviations for the systems studied here at T = 298.15 K and p = 0.1 MPa; for the rest of the temperatures, the graphical comparisons are similar. In fact, for these systems, the surface tension deviation clearly correlates with the excess molar volume.…”

Section: Resultsmentioning

confidence: 79%

“…The drop volume V is related to the surface tension σ by where g is the gravitational acceleration constant, Δρ is the difference in density between liquid and air, r cap is the radius of the capillary, and f is a correction factor , that is automatically calculated by the tensiometer. The density differences needed to determine the surface tension were calculated from our previous papers, − and these calculated densities for the binary mixtures N , N -dimethylacetamide with alkanols are given in Table S1. The temperature was regulated within ±0.01 K using a thermostat (Lauda E-200).…”

Section: Methodsmentioning

confidence: 99%

“…In this sense, surface tension deviation was calculated to understand its dependence on temperature, composition, length of the alcohol chain, and the position of the hydroxyl group. Previous studies from our laboratory − include the experimental determination of some bulk properties of these binary mixtures. Here, we focus on the excess molar enthalpy, which is the most relevant property to obtain information about the nature and strength of molecular interactions.…”

Section: Introductionmentioning

confidence: 99%

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Surface and Calorimetric Behavior of N,N-Dimethylacetamide with n-Alkanols or 2-Alkanols

et al. 2022

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The surface tension at the liquid−air interface of eight binary mixtures formed by N,N-dimethylacetamide and n-alkanols (from methanol to 1-pentanol) or 2-alkanols (from 2-propanol to 2-pentanol) was studied at three different temperatures (283.15, 298.15, and 313.15 K) and a pressure of 0.1 MPa. Surface tension deviations were also calculated. Moreover, the excess molar enthalpies for all of these mixtures were measured at T = 298.15 K and a pressure of 0.1 MPa. Both deviation and excess functions were correlated with the mole fraction by means of the Redlich−Kister equation. The surface tension deviations are found to be positive for the system containing methanol, sigmoidal for ethanol and negative for the rest of the alkanols. With regard to excess molar enthalpies, negative values are found for the system containing methanol, sigmoidal values for ethanol, and positive values for the rest of the alkanols.

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Section: Resultsmentioning

confidence: 79%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Surface and Calorimetric Behavior of N,N-Dimethylacetamide with n-Alkanols or 2-Alkanols

et al. 2022

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“…Where ρ0, ρ -Density of the solvent and solution, u0, u-Velocity of the solvent and solution [10,11]…”

Section: Relative Associationmentioning

confidence: 99%

Physico-chemical and acoustic behaviour of Potassium metabisulphite salts in aqueous medium

Chanderasekaran,

Nithiyanantham

2023

Preprint

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Density, viscosity and ultrasonic velocity through which liquids and liquid mixtures analysed by means of understanding molecular interactions. In the present paper, relaxation time, relaxation amplitude, ultrasonic attenuation, relative association, isentropic compressibility, Vander Waal’s constant, internal pressure, equivalent conductance, cohesive energy barrier, molar volume, molar solvation number and some related parameters for aqueous solution of potassium metabisulphite at different concentration and temperature ranges have been estimated through velocity measurements at 2 MHz frequency. There has also been research on the ability of the solute to form or break structures in water solvents. A statistical method called the ANOVA technique has been employed to qualitatively analyse the obtained results. A food preservative known as potassium metabisulphite preserves the natural colour of food. In beverages such as wine, juice, and beer, it acts as a bleaching agent. Besides protecting against bacteria, it also sanitizes fermenting vessels and wine bottles. Tap water can sometimes be disinfected using it in order to remove chloramines. A living being is dependent on water to survive and plays a vital role within the environment. So, it becomes extremely relevant to investigate the physio-chemical behaviour of potassium metabisulphite salts in water.

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“…With the deepening of applied research, the existing single component phase change materials are difficult to meet the needs of practical application due to lack of variety, so the research and development of composite PCMs has attracted much attention. The composite PCMs mainly refers to the general mixed system, binary eutectic system, or polynary component with similar properties, shape‐stable solid‐liquid phase change material,, and inorganic‐organic composite phase change material . Therefore, it is of great significance to explore the preparation of composite phase change energy storage materials.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Thermal Properties of Stearic Acid/n‐Octadecane Binary Eutectic Mixture as Phase Change Materials for Energy Storage

Shen

Wang

et al. 2019

ChemistrySelect

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Stearic acid/n‐octadecane (SA‐ODE) binary eutectic mixture was made by simple melt blending method and differential scanning calorimetry (DSC) was used to characterize the thermal properties of SA, ODE, and their binary mixtures. The phase diagram of SA‐ODE binary system displays a eutectic behavior and the corresponding mass percentage of SA at eutectic point is 4 wt%. The onset melting temperature (Ton) of binary eutectic mixture is 27.4°C, and the latent heat (ΔfusH) is 227 J g−1. The solid‐liquid phase transition temperature and the latent heat of fusion of SA‐ODE binary eutectic mixture have no obvious change after 100 repeated thermal cycles, which suggests the SA‐ODE binary eutectic mixture has good thermal durability and has potential as phase change materials for thermal energy storage.

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Thermophysical study of the binary mixtures of N,N-dimethylacetamide with 2-propanol and 2-butanol

Cited by 16 publications

References 59 publications

Surface and Calorimetric Behavior of N,N-Dimethylacetamide with n-Alkanols or 2-Alkanols

Surface and Calorimetric Behavior of N,N-Dimethylacetamide with n-Alkanols or 2-Alkanols

Physico-chemical and acoustic behaviour of Potassium metabisulphite salts in aqueous medium

Preparation and Thermal Properties of Stearic Acid/n‐Octadecane Binary Eutectic Mixture as Phase Change Materials for Energy Storage

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