Correlations between water uptake and effective fixed charge concentration at high univalent electrolyte concentrations in sulfonated polymer cation-exchange membranes with different morphology

Barragán, V.M.; Pérez-Haro, María José

doi:10.1016/j.electacta.2011.07.060

Cited by 26 publications

(17 citation statements)

References 30 publications

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“…This behaviour can be attributed to the either the high cross-linking degree or the reinforcement of these membranes, and thus to their high mechanical stability [16]. This is in accordance with previous results with the same membranes [14], in which it was observed that the influence of the presence of salt on solution was different for membranes with different structures. Thus, membranes with a high density and a deformable morphology, such as NF115, the presence of the electrolyte can play an influential role in the membrane uptake properties.…”

Section: Liquid Uptakesupporting

confidence: 82%

“…Heterogeneous membranes (MK40, CR65, RXC) show higher solution uptakes than homogeneous membranes (CMX and NF115), indicating that heterogeneous membranes are more hydrophilic, in agreement with previous results [14]. In general, the structure of the heterogeneous membranes consists of small ionexchanger particles dispersed distributed in an inert binder.…”

Section: Liquid Uptakesupporting

confidence: 80%

“…It should be pointed out that the interstitial void fraction in the membranes is not included in Eq. (14). The concentration of fixed ion group, when the porosity of the membranes is considered, can be estimated as ε * = ( − ) − X X 1 1 [19].…”

Section: Liquid Uptakementioning

confidence: 99%

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Experimental determination of the streaming potential across cation-exchange membranes with different morphologies

Somovilla

Villaluenga

Barragán

et al. 2016

Journal of Membrane Science

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a b s t r a c tLiquid uptake and streaming potential have been determined in aqueous sodium chloride solutions for five different commercial sulfonated polymer cation-exchange membranes. The selected membranes have distinct morphologies and electrochemical properties. Differences in the liquid uptake properties of the membranes have been found, which have been analysed on the basis of the structure and the chemical properties of the membranes. In most of the membranes analyzed, the higher the liquid content of the membranes, the lower the effective concentration of fixed charges in the membranes. The streaming potential across the membranes increases linearly with the established pressure difference, and it is larger in heterogeneous membranes than in homogeneous ones. In general, the higher the membrane liquid content, the higher the streaming potential across the membranes.

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Section: Liquid Uptakesupporting

confidence: 82%

Section: Liquid Uptakesupporting

confidence: 80%

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Experimental determination of the streaming potential across cation-exchange membranes with different morphologies

Somovilla

Villaluenga

Barragán

et al. 2016

Journal of Membrane Science

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“…In the absence of glucose in the solution, the results obtained for solvent uptake are in agreement with previous results [37,40,41]. At a given electrolyte concentration, solvent uptake decreases when the ionic radius of the cation increases.…”

Section: Solvent Uptake and Surface Expansionsupporting

confidence: 81%

Chronopotentiometric study of a Nafion membrane in presence of glucose

Freijanes

Barragán

Muñoz

2016

Journal of Membrane Science

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“…From the above data, it is clear that the highest value on IEC of membrane M1strongly related to its morphology and water uptake, which is agree with previous work that membrane morphology affect on selectivity and other membrane characterictics [44].…”

Section: Membrane Characteristicssupporting

confidence: 80%

Roles of Preparation Method on Characteristics of Supramolecular-Structured Polymer Electrolyte Membrane Fuel Cell Based on Sulfonated Polystyrene

Hendrana¹,

Semboor

Natanael

et al. 2018

jsmi

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Polystyrene (S-PS) have been developed in Research Centre for Physics LIPI. In forming the supramolecular structure sulfonate groups in S-PS are aligned with polyethylene-graft-maleic anhydride (PE-g-MA) which carried out by dissolution of the constituent and mixing of both. The alignment of sulfonate groups in s-PS is carried out in a liquid form. Therefore, in this study, the effect of concentration of the solution of both polymers constituent to the alignment of the sulfonate groups and the characteristics of the membrane produced is studied. Scanning Electron Microscope (SEM) images show that all membranes prepared are rigid. Differential Scanning Calorimetry (DSC) studied show very significance differences in its crystal sizes. XRD diffraction data also support the previous results. Membrane prepared from very dilute solution having better ion exchange capacity (IEC), water uptake and ionic conductivity. Therefore, the experiments results showing that very low concentration of polymer constituent, clearly, produced better interaction of both, which agree with hyphotesis in this work where supramolecular structure can be formed by mixing two very dilute polymer solutions.Keywords: PEMFC, Sulfonated polystyrene, PE-g-MA, Supramolecular structure ABSTRAK PERAN METODE PREPARASI PADA KARAKTETISTIK DARI POLIMER ELEKTROLIT MEMBRAN FUEL CELL DENGAN STRUKTUR SUPRAMOLEKULAR BERBASIS POLISTIREN TERSULFONASI.Polimer Elektrolit Membran Fuel Cell dengan struktur supramolekular berbasis polistirena tersulfonasi (S-PS) telah dikembangkan di Pusat Penelitian Fisika LIPI. Pada pembentukan struktur supramolekular gugus sulfonat pada polistirena tersulfonasi diarahkan dengan polietilen-graft-anhidrida maleat (PE-g-MA) yang dilakukan dengan melarutkan kedua bahan penyusun tersebut. Pengarahan gugus sulfonat dari S-PS dilakukan dalam kondisi cair. Karenanya, dalam studi ini, efek dari konsentrasi dari kedua larutan polimer penyusun pada pengarahan gugus karbonat dimaksud dan karakteristik-karakteristik dari membran yang dihasilkan akan dipelajari. Image SEM menunjukkan bahwa semua membran yang dibuat adalah rigid. Studi DSC menunjukkan terdapat perbedaan yang sangat berarti pada ukuran kristal. Data XRD juga mendukung hasil-hasil yang diperoleh. Membran yang dibuat dengan larutan yang sangat encer memiliki kapasitas petukaran ion (EIC), tangkapan-air dan konduktifitas ionik yang lebih baik. Oleh karenanya, data eksperimen menunjukkan

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Correlations between water uptake and effective fixed charge concentration at high univalent electrolyte concentrations in sulfonated polymer cation-exchange membranes with different morphology

Cited by 26 publications

References 30 publications

Experimental determination of the streaming potential across cation-exchange membranes with different morphologies

Experimental determination of the streaming potential across cation-exchange membranes with different morphologies

Chronopotentiometric study of a Nafion membrane in presence of glucose

Roles of Preparation Method on Characteristics of Supramolecular-Structured Polymer Electrolyte Membrane Fuel Cell Based on Sulfonated Polystyrene

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