Results 151 to 160 of about 133,028 (189)
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Mechanism of hypercrosslinking of chloromethylated styrene–divinylbenzene copolymers
Reactive and Functional Polymers, 1999Abstract Hypercrosslinked polymers are remarkable materials exhibiting extremely high apparent surface area and exceptional sorption properties. Their special morphology is a result of the fixation of expanded position of polymer chains in a good (swelling) solvent by methylene crosslinking bridges created by the Friedel–Crafts reaction of ...
Pavel Veverka, Karel Jeřábek
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Adsorption of mercury(II) on macroreticular styrene—divinylbenzene copolymer beads
Talanta, 1979The adsorption characteristics of mercury(II) on several kinds of styrene-divinylbenzene copolymer beads having different surface properties were studied. It was found that the polymer beads selectively adsorbed mercury(II) from solutions over a wide range of pH with high efficiency.
A, Sugii, N, Ogawa, H, Imamura
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Effects of post-crosslinking of macroreticular styrene–divinylbenzene copolymers on their morphology
Polymer, 2006Abstract We performed a detailed comparison of properties of two different styrenic polymers containing divinylbenzene as the crosslinker before and after the introduction of the additional crosslinks by Friedel–Craft's reaction of the residual double bonds.
Aleksieva K +6 more
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Neutral Styrene Divinylbenzene Copolymers for Adsorption of Toxins in Liver Failure
Biomacromolecules, 2008In artificial extracorporeal liver support systems, albumin-bound toxins such as bilirubin, bile acids, or aromatic amino acids are removed by adsorption to polymer beads. To overcome the potential weaknesses of anion exchange polymers currently used in liver support, namely, binding of heparin and activation of coagulation, we prepared two series of ...
Viktoria, Weber +5 more
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Surface sulphonated highly crosslinked styrene‐divinylbenzene copolymers
Die Angewandte Makromolekulare Chemie, 1988AbstractA series of surface sulphonated macroporous styrene‐divinylbenzene (S‐DVB) copolymers containing various amounts of —SO3H groups was obtained. Porous structure, surface hydrophilicity and polarity, and sorption properties of these copolymers as well as those of starting S‐DVB resin towards some substances which are present in blood were ...
Boz̊ena N. Kolarz +2 more
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Styrene–divinylbenzene copolymers: Influence of the diluent on network porosity
Journal of Applied Polymer Science, 1984The formation of the permanent porosity in the classical matrix, styrene–divinylbenzene copolymers, using cyclohexane, cyclohexanol, or cyclohexanone as diluent was studied. The data concerning porous networks were corroborated with the solvent–polymer interaction factor and the cohesive energy density which are important in the prediction of copolymer
Ig. C. Poinescu +2 more
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AN OVERVIEW OF HYDROPHOBIC CATALYST OVER STYRENE-DIVINYLBENZENE COPOLYMER
Chemical Engineering Communications, 2012Recently developed catalytic processes with hydrophobic catalysts supported over styrene-divinylbenzene copolymer (SDB) were reviewed. Applications of such catalytic processes in commercial chemicals production and environmental management were examined in great detail.
Baohe Wang, Weili Ran
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Inhomogeneity of gel and microsyneresis in porous styrene‐divinylbenzene copolymers
British Polymer Journal, 1985AbstractThe porosity of styrene‐divinylbenzene copolymers prepared by suspension copolymerisation of the monomers carried out in the presence of inert diluent changes due to solvent pretreatment is investigated. The changes seem to reflect the inhomogeneity of copolymer gel.
Henryk Galina +3 more
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Scanning electron microscopy study of styrene-divinylbenzene copolymers
European Polymer Journal, 1992Abstract Styrene divinylbenzene copolymers have been synthesized by suspension polymerization in the presence of toluene and heptane as diluents for the monomers. The effects of toluene/heptane ratio, degree of dilution of the monomers and divinylbenzene(DVB) content on the surface formation of the copolymer beads were examined by scanning electron ...
F.M.B. Coutinho, D. Rabelo
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Styrene‐divinylbenzene copolymers, 3. Revisited IR analysis
Die Makromolekulare Chemie, 1981AbstractA critical analysis of the styrene‐divinylbenzene resin infra‐red spectra was made using previous works and new results. A method for the determination of pendent double bonds and also crosslinking degree and composition of the resin is drawn. A few examples of application are given.
Michel Bartholin +2 more
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