Results 121 to 130 of about 605 (154)
Some of the next articles are maybe not open access.
Porosity variation and swelling of styrene-divinylbenzene copolymers
Polymer Bulletin, 1980The porosity measured for two series of diluent-modified styrene (S) — divinylbenzene (DVB) copolymers (10 and 20 wt.-% of DVB) was found to depend on sample pre-treatment. A correlation between the volume fraction of the polymer in the swollen gel and the volume fraction of octane used as diluent has been established assuming the isotropic swelling of
Henryk Galina, Bo?ena N. Kolarz
openaire +1 more source
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
openaire +2 more sources
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
openaire +3 more sources
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
openaire +2 more sources
The formation and structure of suspension‐polymerized styrene–divinylbenzene copolymers
Journal of Applied Polymer Science, 1981AbstractPorous polymers were prepared by suspension copolymerization of styrene/divinylbenzene in various ratios together with various quantities of diluents, both solvating and nonsolvating. Parallel bulk polymerizations were made to detect the onset of gelation and phase separation.
G. J. Howard, C. A. Midgley
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source
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
openaire +1 more source