Surface tension, (solid+liquid) equilibria and (liquid+liquid) equilibria for (iPBu-1+hydrocarbon, or alcohol) systems

Kozłowska, Marta Karolina; Domańska, Urszula; Dudek, Dorota; Rogalski, Marek

doi:10.1016/j.fluid.2005.07.018

Cited by 7 publications

(6 citation statements)

References 36 publications

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“…There were only two published values of surface tension of liquid 2,2-dimethylbutane in previous literature, as shown in Table . The deviations of eq from refs and at 298.15 K are −0.16 mN·m −1 and −0.41 mN·m −1 .…”

Section: Resultsmentioning

confidence: 70%

Surface Tension of 2,2-Dimethylbutane from (233 to 378) K

2009

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The surface tension of 2,2-dimethylbutane was measured at temperatures from (233 to 378) K with a differential capillary rise method, together with the surface tension of heptane measured at temperatures from (303 to 358) K for verifying the experimental apparatus. The uncertainty of temperature is less than ( 10 mK. The uncertainty for surface tension was estimated to be within ( 0.2 mN • m -1 . The surface tension results were correlated as a function of temperature with an average absolute deviation of 0.049 mN • m -1 for 2,2-dimethylbutane.

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Section: Resultsmentioning

confidence: 70%

Surface Tension of 2,2-Dimethylbutane from (233 to 378) K

2009

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“…Predictions of the phase behavior of polybutene ( M w = 30.7 kg/mol and M w / M n = 1.83) with 1-octanol are shown in Figure b together with the experimental data published by Kozlowska et al The molecular weight distribution of this polymer was modeled using seven pseudocomponents (see Table ). It can be seen that the results obtained using a k ij = 0 overestimate the experimental phase behavior.…”

Section: Resultsmentioning

confidence: 98%

“…Dotted−dashed lines represent PC-SAFT predictions using k ij = 0. Symbols are experimental data taken from the literature. , The polymer was modeled using seven pseudocomponents (see Tables and ) in both systems.…”

Section: Resultsmentioning

confidence: 99%

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Phase Behavior of Polymer Solutions from Macroscopic Properties: Application to the Perturbed Chain Statistical Associating Fluid Theory Equation of State

Castro-Marcano¹,

Cataño-Barrera²,

Colina³

2011

Ind. Eng. Chem. Res.

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In this work, a parametrization strategy that allows the estimation of polymer molecular parameters from a predefined set of macroscopic properties is presented. The parametrization scheme has been developed in terms of the polymer−solvent interaction parameter (χ) and the Hildebrand parameter, which are readily available in the literature for a large variety of solvents and polymers. In this way neither extensive experimental data nor complex optimization schemes are necessary. The proposed parametrization strategy is demonstrated by reference to the PC-SAFT equation of state, but can be applied to any molecular-based model. The polymers investigated in this study include polyisobutylene, polyethylene, polypropylene, and polystyrene as well as polybutadiene, polyisoprene, and polybutene, which were used to investigate the predictive capacity of the parametrization strategy presented in this work. The solvents studied include nonassociating compounds such as n-alkanes, polar compounds such as ethers, esters, and ketones, and associating compounds such as alcohols. Phase equilibria calculations of binary and ternary polymer solutions are made to evaluate the performance of the PC-SAFT model using polymer molecular parameters calculated from the proposed parametrization strategy. The results obtained are in agreement with the available experimental data for most studied systems, demonstrating the reliability of the parametrization scheme developed in this work.

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“…Surface tension data for liquid mixtures are widely used for chemical engineering applications [4][5][6] because surface properties play an important role in mass transfer processes such as liquid-liquid extraction, gas absorption, distillation, and condensation. A critical review of the available literature reveals that there is a large database on surface properties for a number of binary liquid mixtures over wide temperature and concentration ranges [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Application of the Extended Langmuir Model for the Determination of Lyophobicity of 1-Propanol in Acetonitrile

Tsierkezos

2009

Int J Thermophys

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Surface tensions (σ ) of binary liquid mixtures of acetonitrile (ACN) with 1-propanol (PrOH) were measured over the entire composition range at eight different temperatures, 278.15 K, 283.15 K, 288.15 K, 293.15 K, 298.15 K, 303.15 K, 308.15 K, and 313.15 K. The lyophobicities (β) of the surfactant PrOH relative to that of ACN as well as the surface mole fractions (x S 2 ) of PrOH at various temperatures were derived using the extended Langmuir model (Langmuir 17, 4261, 2001). The β values indicate the greater affinity of PrOH for the surface, and this trend slightly increases with rising temperature. The determined x S 2 values indicate that the surface concentration of PrOH is always higher than its bulk concentration and consequently confirm that the surface is enriched with PrOH.

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Surface tension, (solid+liquid) equilibria and (liquid+liquid) equilibria for (iPBu-1+hydrocarbon, or alcohol) systems

Cited by 7 publications

References 36 publications

Surface Tension of 2,2-Dimethylbutane from (233 to 378) K

Surface Tension of 2,2-Dimethylbutane from (233 to 378) K

Phase Behavior of Polymer Solutions from Macroscopic Properties: Application to the Perturbed Chain Statistical Associating Fluid Theory Equation of State

Application of the Extended Langmuir Model for the Determination of Lyophobicity of 1-Propanol in Acetonitrile

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