Results 211 to 220 of about 2,814 (258)
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Studies on ion‐exchange membranes. XXXII. Heterogeneity in ion‐exchange membranes
Journal of Applied Polymer Science, 1970AbstractTwelve kinds of cation‐exchange membranes were treated with hydrogen peroxide. Some of them (Selemion CMV, Nepton CR‐61, Scrion C‐100, SAM‐1) were completely destroyed. Heterogeneity is believed to be present in that part of their chemical structures that is decomposable by the treatment. The other membranes were converted into porous membranes
Yukio Mizutani, Masakatsu Nishimura
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Hydrometallurgy, 1983
The name “ion-exchange membranes” arose because the first such articles were made by preparing in sheet form the conventional organic ion-exchangers available 30 years ago. The purpose of these membranes is not to exchange ions but to transmit them in a controlled way.
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The name “ion-exchange membranes” arose because the first such articles were made by preparing in sheet form the conventional organic ion-exchangers available 30 years ago. The purpose of these membranes is not to exchange ions but to transmit them in a controlled way.
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2021
Disclosed is a cell comprising an anode, a cathode and a membrane located between the anode and the cathode, whereinthe membrane comprises an aqueous medium and a film comprising amyloid fibres. The invention further relates to said film, stacksof said cells, an electrolyte membrane, and the use of these various devices.
Le Goff, Alan +4 more
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Disclosed is a cell comprising an anode, a cathode and a membrane located between the anode and the cathode, whereinthe membrane comprises an aqueous medium and a film comprising amyloid fibres. The invention further relates to said film, stacksof said cells, an electrolyte membrane, and the use of these various devices.
Le Goff, Alan +4 more
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1992
The properties and preparation procedures of ion-exchange membranes are closely related to those of ion-exchange resins. As with resins, many types of membranes are possible with different polymer matrixes and different functional groups to confer ion-exchange properties on the product.
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The properties and preparation procedures of ion-exchange membranes are closely related to those of ion-exchange resins. As with resins, many types of membranes are possible with different polymer matrixes and different functional groups to confer ion-exchange properties on the product.
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1980
Methods of preparing cation- and anion-exchange membranes with low areal resistances were developed for use in lower cost desalination of seawater. Membranes of both types were prepared having the desired resistance of 1 Ω . cm or less. Preparation involved using reinforcements to strengthen polymer compositions.
Anthony Delyannis +1 more
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Methods of preparing cation- and anion-exchange membranes with low areal resistances were developed for use in lower cost desalination of seawater. Membranes of both types were prepared having the desired resistance of 1 Ω . cm or less. Preparation involved using reinforcements to strengthen polymer compositions.
Anthony Delyannis +1 more
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Studies with inorganic ion-exchange membranes
Talanta, 1978The pyridinium molybdoarsenate membrane shows a response to pyridinium ions and can be used to determine the concentration of these ions in the range 10(-3)-1M. The potentials generated across the membrane are reproducible and the response time is less than 1 min. There is no interference from certain inorganic and organic ions.
S K, Srivastava +3 more
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Cellulosic ion‐exchange membranes for hemodialysis
Journal of Biomedical Materials Research, 1977AbstractThe application of cellulosic ion‐exchange membranes to hemodialysis was studied in vitro. The membranes were prepared by radiation‐grafting methacrylic acid and vinylpyridine to films of DuPont cellophane PD‐215 to produce cation‐exchange and anion‐exchange membranes, respectively.Solutions of urea, creatinine, glucose, and uric acid were ...
A N, Mollison, W F, Graydon
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Electrolytic Desalting with Ion-Exchange Membranes
Nature, 1956SEPARATION of amino-acids and other substances by paper chromatography must often be preceded by the removal of inorganic salts. The common methods1 require careful supervision, and under optimal conditions a loss of 10–20 per cent of many amino-acids may occur with 50 per cent loss of arginine by conversion to ornithine2. A simplified form of desalter,
J D, BLAINEY, H J, YARDLEY
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Electrolytic Separation of Ions by Ion‐Exchange Membranes
Berichte der Bunsengesellschaft für physikalische Chemie, 1978AbstractThe ion separation by ion‐exchange membranes appears to be of interest as an energy‐saving, continuous and economical process. The separation of ions of the same valency can only be achieved through membranes which have specific interaction with these ions.
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Specific ion effects on membrane potential and the permselectivity of ion exchange membranes
Phys. Chem. Chem. Phys., 2014Membrane potential and permselectivity are critical parameters for a variety of electrochemically-driven separation and energy technologies. An electric potential is developed when a membrane separates electrolyte solutions of different concentrations, and a permselective membrane allows specific species to be transported while restricting the passage ...
Geise, Geoffrey M. +4 more
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