Ion exchange membranes based on silica and sulfonated copolymers of styrene with allyl glycidyl ether

Лебедева, О. В.; Malahova, Ekaterina; Sipkina, E. I.; Chesnokova, Alexandra; Kuzmin, Anton V.; Maksimenko, S. D.; Pozhidaev, Yu. N.; Rzhechitskiy, A. E.; Raskulova, Tat'yana; Иванов, Н. А.

doi:10.1134/s0965544117090067

Cited by 7 publications

(4 citation statements)

References 18 publications

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“…These membranes possess high proton conductivity (3.6 • 10 −2 Sm/cm at 120 °C), mechanical strength, dense structure, thermal stability and therefore have considerable potential for use in fuel cells. New proton-conducting membranes based on sulfo-containing copolymers styreneallylglycidylether and tetraethoxysilane were obtained by the sol-gel method [7]. Hybrid composites have good elasticity, thermal and chemical stability, their proton conductivity is 1.46 • 10 −3 S/cm.…”

Section: Introduction *mentioning

confidence: 99%

Proton-conducting Organic-inorganic Sulfo-containing Membranes for Fuel Cell

Grigoravičiūtė-Puronienė

Yevchuk²,

Demchyna³

et al. 2022

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Cross-linked organiс-inorganic sulfo-containing membranes of various compositions based on acrylic monomers (acrylonitrile, acrylic acid, 3-sulfopropylacrylate potassium salt, ethylene glycol diacrylate) and sol-gel systems of tetraethoxysilane have been developed. Synthesis of the polymer matrix was carried out by UV-initiated polymerization of the monomer mixture and the inorganic component was formed in situ while conducting the sol-gel process of the precursor. FTIR, SEM, EDS, DMA, impedance spectroscopy were used to characterize the synthesized materials. The influence of inorganic component content on the properties of the membranes was investigated. DMA results show that an increase in silica content leads to a decrease in packing density and an increase in structural heterogeneity in sulfo-containing polyacrylate/silica membranes. The highest values of proton conductivity 1.12 ꞏ 10−2 Sm/cm at 60 °C were found in membranes containing 3 wt.%. of the added sol-gel system. Further increase of silica content does not increase the proton conductivity of the membranes. The proton transfer activation energies in the membranes were calculated from the temperature dependence of proton conductivity. The obtained cross-linked sulfo-containing organic-inorganic materials can be used for the development of proton-conducting membranes for fuel cells.

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Section: Introduction *mentioning

confidence: 99%

Proton-conducting Organic-inorganic Sulfo-containing Membranes for Fuel Cell

Grigoravičiūtė-Puronienė

Yevchuk²,

Demchyna³

et al. 2022

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“…Therefore, studies aimed at improving the properties of membranes containing sulfonated polystyrene (PSS) have been intensively conducted. In particular, the following methods have been studied: surface profiling of heterogeneous membranes [12]; coating of their sur-face with a thin layer of a perfluorinated sulfonated cation-exchange material [16,17]; doping with various additives, such as polyaniline [18], zirconium phosphate [19], zirconia [20], and ceria [21]; synthesis of sulfonated copolymers of styrene with allyl glycidyl ether [22]; and radiation-induced chemical grafting of styrene to poly(vinylidene fluoride) with subsequent sulfonation [23]. Promising dopants are acid salts of heteropoly acids with heavy alkali metal cations.…”

Section: Introductionmentioning

confidence: 99%

Effect of Modification with Cesium Acid Salt of Phosphotungstic Acid on the Properties of Membranes Based on Grafted Sulfonated Polystyrene

Прихно

Yaroslavtsev

Голубенко

2019

Membr. Membr. Technol.

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The possibility of modification of ion-exchange membranes with high pore and channel volumes and the effect of doping on the membrane properties have been studied. Hybrid membranes based on sulfonated polystyrene grafted onto polymethylpentene and cesium acid phosphotungstate have been synthesized by the in situ method. It has been shown that modification of these membranes leads to an increase in conductivity to 34.8 mS/cm at 25°С in contact with water. The chloride anion transport numbers for the original and modified membranes are about 4%.

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“…The presence of epoxy groups in their composition makes it possible to achieve strong binding of the organic part with the organosilicon block of the mem-brane in the process of sol-gel synthesis and promotes the improvement of the mechanical characteristics of the membrane [34]. Earlier, we studied membranes based on sulfonated styrene-allyl glycidyl ether copolymers and silica, which provide proton conductivity of 1.35-4.21 × 10 −2 S cm −1 at a relative humidity of 75% and ultimate tensile strength of 4-7 MPa [35,36].…”

Section: Introductionmentioning

confidence: 99%

Proton-Exchange Hybrid Membranes: A Copolymer of Ethylene Glycol Vinyl Glycidyl Ether and Vinyl Chloride/Polyorganylsilsesquioxane

Лебедева

Малахова

Raskulova

et al. 2019

Membr. Membr. Technol.

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Copolymers of ethylene glycol vinyl glycidyl ether (VGE) and vinyl chloride (VC) have been obtained via radical copolymerization of VGE with VC at 70°C in the presence of the initiator azobisisobutyronitrile. By the sol-gel synthesis involving VGE-VC copolymers and carbofunctional organosilicon precursors, such as N,N'-bis(3-triethoxysilylpropyl)thiocarbamide (BTM) and 2-([triethoxysilylpropyl]amino)pyridine (TEAP), hybrid organic-inorganic membranes possessing proton conductivity after doping with orthophosphoric acid have been fabricated. The proton conductivity of the membranes in the temperature range of 30-80°C is characterized by the values of 3.52-4.88 × 10 −3 S cm −1 for VGE-VC/ BTM/H 3 PO 4 and 1.19-2.89 × 10 −3 S cm −1 for VGE-VC/TEAP/H 3 PO 4 .

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Ion exchange membranes based on silica and sulfonated copolymers of styrene with allyl glycidyl ether

Cited by 7 publications

References 18 publications

Proton-conducting Organic-inorganic Sulfo-containing Membranes for Fuel Cell

Proton-conducting Organic-inorganic Sulfo-containing Membranes for Fuel Cell

Effect of Modification with Cesium Acid Salt of Phosphotungstic Acid on the Properties of Membranes Based on Grafted Sulfonated Polystyrene

Proton-Exchange Hybrid Membranes: A Copolymer of Ethylene Glycol Vinyl Glycidyl Ether and Vinyl Chloride/Polyorganylsilsesquioxane

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