Results 301 to 310 of about 65,640 (354)
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Antifouling Ion-Exchange Resins
ACS Applied Materials & Interfaces, 2018Large quantities of organic ion-exchange resins are used worldwide for water decontamination and polishing. Fouling by microorganisms and decomposition products of natural organic matter severely limits the lifetime of these resins. Much research has thus been invested in polymer-based antifouling coatings. In the present study, poly(4-styrenesulfonate)
Yara E. Ghoussoub +4 more
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1994
The bile acid-binding resins cholestyramine (CH) and colestipol (CO) are effective drugs for the treatment of patients with elevated low-density lipoprotein (LDL) cholesterol plasma concentrations without concurrent hypertriglyceridemia. Since the bile acid sequestrants are not absorbed in the gastrointestinal tract, they cannot cause direct systemic ...
W. O. Richter, P. Schwandt
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The bile acid-binding resins cholestyramine (CH) and colestipol (CO) are effective drugs for the treatment of patients with elevated low-density lipoprotein (LDL) cholesterol plasma concentrations without concurrent hypertriglyceridemia. Since the bile acid sequestrants are not absorbed in the gastrointestinal tract, they cannot cause direct systemic ...
W. O. Richter, P. Schwandt
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Ion Exchange and the Swelling of Ion-exchange Resins
Russian Chemical Reviews, 1969The review deals with the modern hypotheses concerning the physicochemical properties of ion-exchange resins and their effects in the interaction between resins and solvents and solutes, mainly electrolytes. The problems associated with the permeability of resins, the steric accessibility of the functional centres, and their screening are discussed ...
G V Samsonov, V A Pasechnik
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Separation Science and Technology, 1988
Abstract Dual mechanism bifunctional polymers (DMBP's) as metal ion extractants are described within the context of two new examples. The carboxylic acid/pseudocrown resin is a new example of the DMBP class of resins described as ion exchange/ coordination resins.
Marie E. Bates +3 more
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Abstract Dual mechanism bifunctional polymers (DMBP's) as metal ion extractants are described within the context of two new examples. The carboxylic acid/pseudocrown resin is a new example of the DMBP class of resins described as ion exchange/ coordination resins.
Marie E. Bates +3 more
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Comparison of chromatographic ion-exchange resins
Journal of Chromatography A, 2000A comparative study on weak anion exchangers was performed to investigate the pH dependence, binding strength, particle size distribution, and static and dynamic capacity of the chromatographic resins. The resins tested included: DEAE Sepharose FF, Poros 50 D, Fractogel EMD DEAE (M), MacroPrep DEAE Support, DEAE Ceramic HyperD 20, and Toyopearl DEAE ...
Staby, A. +10 more
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Diffusion in ion exchange resins
AIChE Journal, 1963AbstractObservations on the rate of ion exchange in Dowex 50W resins are reported. These measurements were made under conditions where solid diffusion was the governing phenomenon for six pairs of ions sodium‐zinc, sodium‐silver, silver‐aluminum, zinc‐copper, zinc‐aluminum, and aluminum‐cerium (trivalent).
Harding Bliss, Burton Hering
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Aminovinylpyridine ion-exchange resins
Russian Journal of Applied Chemistry, 2006Highly permeable aminovinylpyridine ion-exchange resins are synthesized by the reaction of epoxy/polyvinylpyridine prepolymers with aliphatic amines. Synthetic conditions are optimized and physicochemical and sorption characteristics of the resulting polyelectrolytes are examined.
E. E. Ergozhin, K. M. Imanbekov
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Hypercrosslinked Ion-Exchange Resins
2011Publisher Summary This chapter reviews the ion exchange capacity and swelling behavior of hypercrosslinked strong acidic ion-exchange resins. The swelling of hypercrosslinked sulfonated ion-exchanger in nonpolar benzene, heptane, and ethylene dichloride is only insignificantly smaller than that in water or polar methanol.
Vadim A. Davankov, Maria Tsyurupa
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PREPARATION OF ION-EXCHANGE RESINS
Canadian Journal of Chemistry, 1954Ion-exchange resins as membranes and in granular form have been prepared by the copolymerization of divinylbenzene with various esters of p-styrene-sulphonic acid and subsequent hydrolysis. The synthesis of the sulphonated styrene monomers is described.
J. Ciric, I. H. Spinner, W. F. Graydon
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[2] Improved ion-exchange resins
1977Publisher Summary This chapter explores the importance of particle size, size distribution, and cross-linkage in the resins employed in ion-exchange and their application in the improvement of analysis. Ion-exchange resins have been improved in recent years through advances in polymer chemistry technology, by narrower size classification, and by ...
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