Studies on thermo-acoustic parameters of poly(ethylene glycol)- 400 at different temperatures

Sannaningannavar, F. M.; Navati, B. S.; Ayachit, N. H.

doi:10.1007/s10973-012-2724-5

Cited by 22 publications

(6 citation statements)

References 17 publications

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“…Values of L f and κ S were calculated based on those of u and ρ of the aqueous solutions of ELP, RH40, and their mixtures (Figs and ) and are presented in Table along with the values of available volume ( V a ) and molar sound velocity ( R a ) (Sannaningannavar et al, ), which were calculated from:

V_{a} = \frac{1 - u}{u_{\infty}} V_{m}

R_{a} = V_{m} u^{1 / 3}

where u ∞ = 1600 ms −1 and V m is the molar volume. L f values decrease significantly at the value of C higher than 10 −3 M for all solutions indicating closer molecular packing and is a result of specific intermolecular interactions among the molecules of surfactants in micelles.…”

Section: Resultsmentioning

confidence: 99%

Determination of Acoustical Parameters of Aqueous Solution of Kolliphors Binary Mixtures Using Density, Speed of Sound, Viscosity, and Surface Tension Measurements

Szaniawska

Terpiłowski

2019

J Surfact & Detergents

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Measurements of density, speed of sound, and surface tension as well as viscosity of aqueous Kolliphor® ELP (ELP) and Kolliphor® RH 40 (RH40) solutions as well as binary mixtures at different surfactant mole fractions were made at 293 K to investigate their aggregation behavior. The free volume, internal pressure, and molar cohesive energy were calculated and compared to the specific acoustic impedance and intermolecular free length to obtain qualitative information about the character of interactions between the surfactant molecules in the mixture through the water phase.

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V_{a} = \frac{1 - u}{u_{\infty}} V_{m}

R_{a} = V_{m} u^{1 / 3}

Section: Resultsmentioning

confidence: 99%

Determination of Acoustical Parameters of Aqueous Solution of Kolliphors Binary Mixtures Using Density, Speed of Sound, Viscosity, and Surface Tension Measurements

Szaniawska

Terpiłowski

2019

J Surfact & Detergents

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“…Accuracy in the density measurement was ±2 9 10 -4 g cm -3 . The results of densities measured and the validity of the technique adopted were ascertained by comparing our results of densities [20] of benzene, toluene and n-hexane (0.8739, 0.8616 and 0.6556 g.cm -3 respectively) with the results reported in the literature [20]. The deviations of measured densities from literature values were less than 0.06 %.…”

Section: Methodsmentioning

confidence: 74%

Thermodynamic Parameters and their Dependence on Temperature in the Range 298–353 K for Ethoxylated Sorbitan Ester Tween 20, 40, 60 and 80 Surfactants

Sannaningannavar

Patil²,

Melavanki

et al. 2015

J Surfact & Detergents

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Thermodynamic parameters of liquid ethoxylated sorbitan ester (Tween 20, 40, 60 and 80) surfactants have been evaluated. For the estimation of these parameters, molar volumes (V) and volume expansion coefficients (a) at different temperatures are employed. These dilatometric studies are predominantly directed towards the establishment of the invariant nature of Sharma's parameter (S 0 ). The S 0 and all other parameters values are used to discuss and throw light on the internal structure, molecular order, molecular packing, molecular movement and intermolecular interactions.

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“…The findings were explained in terms of PEG hydration and conformational changes in water. The density and ultrasonic velocity were measured by Sannaningannavar et al 19 for the pure liquid PEG between 299 and 363 K temperatures. By using density and ultrasonic velocity, other parameters such as isentropic compressibility, acoustic impedance, intermolecular free length, Schaff's available volume, molar volume, molar compressibility, and molar sound velocity were calculated.…”

Section: Introductionmentioning

confidence: 99%

Volumetric and Ultrasonic Studies of PEG200, PEG400, and Ethanol–Chlorhexidine Solutions at Various Temperatures

et al. 2023

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The density and sound velocity values for polyethylene glycols (PEGs) with molecular weights 200 and 400 in ethanol–chlorhexidine solutions were investigated at different temperatures, 288.15 to 318.15 K, and concentrations of 0.001, 0.003, and 0.005 mol·kg–1. The apparent molar properties and partial molar properties of ethanol–chlorhexidine solutions containing PEGs (200/400) were obtained using this experimental data. The thermodynamic parameters, such as apparent molar volume, (V ϕ), and limiting partial molar volume, (V ϕ 0), are determined using density values obtained experimentally, whereas acoustic properties, such as apparent molar isentropic compression, (K ϕ, s), and limiting partial molar isentropic compression, (K ϕ, s 0), are calculated using sound velocity values. These thermodynamic apparent and partial molar properties imply the occurrence of strong solute–solvent interactions. The temperature-dependent partial molar volume and partial molar expansibilities (E ϕ 0) were also calculated. The presence of strong solute–solvent interactions has been discovered in the liquid mixtures.

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Studies on thermo-acoustic parameters of poly(ethylene glycol)- 400 at different temperatures

Cited by 22 publications

References 17 publications

Determination of Acoustical Parameters of Aqueous Solution of Kolliphors Binary Mixtures Using Density, Speed of Sound, Viscosity, and Surface Tension Measurements

Determination of Acoustical Parameters of Aqueous Solution of Kolliphors Binary Mixtures Using Density, Speed of Sound, Viscosity, and Surface Tension Measurements

Thermodynamic Parameters and their Dependence on Temperature in the Range 298–353 K for Ethoxylated Sorbitan Ester Tween 20, 40, 60 and 80 Surfactants

Volumetric and Ultrasonic Studies of PEG200, PEG400, and Ethanol–Chlorhexidine Solutions at Various Temperatures

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