Transport parameters of alcohol vapors through ion-exchange membranes

Kujawski, Wojciech; Staniszewski, Marek; Nguyen, Trong Q.

doi:10.1016/j.seppur.2006.08.027

Cited by 21 publications

(17 citation statements)

References 32 publications

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“…3). This observed movement of the lithium ion from the sulfonic group in the hydrated Nafion membrane proves the dissociation of the functional group [9]. Further buildup of the water molecules in the Nafion membrane leads to additional slight increase of the-SO 3 − … Li + distance.…”

Section: Resultsmentioning

confidence: 75%

“…1. These membranes possess identical perfluorinated backbone but different side chains and the functional groups with varying ionic strength [9,10]. Nafion membrane contains ether-linked side chains terminated with sulfonic groups.…”

Section: Membranes Studiedmentioning

confidence: 99%

“…The dissociation of the ion-pair is easier in the perfluorinated membrane Nafion than in aromatic membranes IonClad and PESS. Also, the diffusion coefficients of aliphatic alcohol are higher in perfluorinated membranes than in aromatic ones [9,10].…”

Section: Introductionmentioning

confidence: 96%

“…Numerous papers presented also experimental investigations of ion-exchange membranes applied in the separation of liquid mixtures by pervaporation [5][6][7][8][9]. Cabasso et al [5,6] and Godino et al [7] showed that separation of alcohol/water mixtures using Nafion membrane depends on the type of the counter-ions.…”

Section: Introductionmentioning

confidence: 99%

“…Kujawski et al [9,10] investigated the influence of the character of the sulfonic group and size of the counter-ion on aliphatic alcohols transport across the membranes Nafion, IonClad, and PESS (based on polyethylene/poly(styrene-codivinylbenzene)). Both, the stronger acidic character of the sulfonic group and the smaller radius of the counter-ion, provide an easier dissociation of the ion-pairs and enhance the alcohol transport.…”

Section: Introductionmentioning

confidence: 99%

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Ab initio study of cationic polymeric membranes in water and methanol

Karpenko-Jereb

Rynkowska

Kujawski

et al. 2015

Ionics

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The work is devoted to a computational study of three types of cationic polymeric membranes in Li + -ionic form, in water and methanol environments, at various solvation levels. The studied membranes Nafion, IonClad, and M3 possess the perfluorinated backbone; however, various side chains were terminated with the functional groups of distinctly different ionic strength. The paper discusses the structural features of the membrane-solvent clusters as well as an influence of the side chain nature on the dissociation of the functional groups and the binding energy of the solvent molecules. Additionally, the paper compares the obtained results for Li + -Nafion membrane in water with the results published earlier for H + and Na + forms.

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Section: Resultsmentioning

confidence: 75%

Section: Membranes Studiedmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ab initio study of cationic polymeric membranes in water and methanol

Karpenko-Jereb

Rynkowska

Kujawski

et al. 2015

Ionics

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Fluid flow modeling in a sulfonated cation‐exchange membrane

Villaluenga

Barragán

Izquierdo-Gil

et al. 2009

J of Applied Polymer Sci

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Liquid permeation measurements of water, methanol, and 2-propanol were carried out using a commercial cation-exchange membrane Nafion-117 (perfluorinated polyethylene with pendant ether-linked side chains terminated with sulfonated groups). The experimental permeation data are treated and analyzed using the capillary model, leading to the determination of equivalent pore radius of the membrane structure.

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Factors related to contraction and mechanical strength of collagen gels seeded with canine endotenon cells

et al. 2007

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Fibroblasts can construct a hydrated collagen lattice to a tissue-like structure that is greatly influenced by initial culture conditions. The purpose of this study was to investigate the effects of cell concentration and collagen concentration on the contraction kinetics and mechanical properties of resultant endotenon-derived fibroblast-seeded collagen lattice. The experiment was designed to evaluate the effect of cell concentration (0, 0.25, 0.5, and 1.0 x10(6) cells/mL) and collagen concentration (0.5, 1.0, 1.5, and 2.0 mg/mL). Collagen lattice contraction was recorded for 42 days, after which time the lattices were mechanically tested. The collagen lattices seeded with higher initial cell concentration had a shorter contraction lag phase (p < 0.01), and exhibited a higher ultimate stress (p < 0.01) and instantaneous and equilibrium modulus (p < 0.01) than those seeded with a lower initial cell concentration. The collagen lattices cultured with a lower initial collagen concentration also had a shorter contraction lag phase, and exhibited greater instantaneous and equilibrium modulus (p < 0.01) than those cultured with higher initial collagen concentration. The collagen lattices of initial 0.5 mg/mL collagen concentration had the highest value of ultimate stress (p < 0.03).

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Transport parameters of alcohol vapors through ion-exchange membranes

Cited by 21 publications

References 32 publications

Ab initio study of cationic polymeric membranes in water and methanol

Ab initio study of cationic polymeric membranes in water and methanol

Fluid flow modeling in a sulfonated cation‐exchange membrane

Factors related to contraction and mechanical strength of collagen gels seeded with canine endotenon cells

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