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  • 1
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    The use of modified acrylic copolymers for the preparation of immunoadsorbents (1990)
    Springer
    Details
    Publication Date: 1990-10-01
    Print ISSN: 0009-5893
    Electronic ISSN: 1612-1112
    Topics: Chemistry and Pharmacology
    Published by Springer
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  • 2
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    Investigation of the degree of crystallinity of acrylonitrile-divinylbenzene copolymers (1994)
    Springer
    Details
    Publication Date: 1994-02-01
    Print ISSN: 0022-2461
    Electronic ISSN: 1573-4803
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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  • 3
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    Surface properties of modified acrylates (2002)
    Elsevier
    Details
    Publication Date: 2002-08-01
    Print ISSN: 0927-7757
    Electronic ISSN: 1873-4359
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Elsevier
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal properties of N-vinylcarbazole — divinylbenzene macroporous copolymers (1988)
    Springer
    Journal of thermal analysis and calorimetry 33 (1988), S. 1129-1133 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die thermischen Eigenschaften von makroporösen N-Vinylcarbazol (NVC)-Divinylbenzen (DVB)-Copolymeren mit 20, 30, 40 oder 50% DVB wurde mittels TG-DTA untersucht. Der Einfluss des Vernetzungsgrades und der Porosität auf die thermische Stabilität der Copolymeren wurde ermittelt. Mit steigendem NVC-Gehalt nahm die thermische Stabilität der Copolymeren zu. Kinetische Parameter des thermischen Abbaus wurden unter Verwendung numerischer Methoden abgeschätzt.
    Abstract: РЕжУМЕ ИспОльжУь МЕтОДы тг И ДтА, ИсслЕДОВАНы тЕРМИЧЕскИЕ сВОИстВ А МАкРОпОРИстых сОпОлИМЕРОВ N-ВИНИлкА РБАжОлА с 20, 30, 40 И 50% ДНВИНИл БЕНжОлА. ИжУЧЕНО ВлИьНИЕ пЕРЕ кРЕстНОгО сшИВАНИь И стЕпЕНИ пО РИстОстИ НА тЕРМОУст ОИЧИВОсть сОпОлИМЕРОВ. НАИДЕНО, ЧтО УВЕлИЧЕНИЕ В сОпОлИМЕРАх сОДЕРж АНИь N-ВИНИлкАРБАжОлА, ВыжыВАЕт Их БОльшУУ тЕРМОУстОИЧ ИВОсть. УстАНОВлЕНы кИНЕтИЧ ЕскИЕ пАРАМЕтРы пРОц ЕссА тЕРМИЧЕскОгО РАжлОж ЕНИь сОпОлИМЕРОВ.
    Notes: Abstract Thermal properties of N-vinylcarbazole (NVC) — divinylbenzene (DVB) macroporous copolymers were investigated using TG, DTA methods. The copolymers contained 20, 30, 40 or 50% of DVB. The effect of the crosslinking and porosity degree on thermal stability of the copolymers was studied. With an increase of the NVC content in copolymers their thermal stability was higher. The kinetic parameters of the thermal degradation process were estimated using numerical methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01912739
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  • 5
    Electronic Resource
    Electronic Resource
    Investigation of the degree of crystallinity of acrylonitrile-divinylbenzene copolymers (1994)
    Springer
    Journal of materials science 29 (1994), S. 660-663 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Using the wide-angle X-ray scattering method, the degree of crystallinity of suspension copolymers and terpolymers of acrylonitrile (AN) and divinylbenzene (DVB) were determined. Copolymers with various degrees of cross-linking (5%–50% DVB) were prepared in the presence of thermodynamically different solvents added in order to obtain porous structure. It was found that copolymers with a degree of cross-linking of 0.1% DVB have a crystallinity index below 0.2, although the crystallinity index of PAN obtained under the same conditions is 0.5. Owing to the solvation conditions, even in copolymers with a degree of cross-linking of 20% DVB, ordered regions occur, and dilution of the polymerization mixture with poor solvents cause a decrease in the degree of crystallinity of these copolymers. Terpolymers AN, butyl acrylate (BA) or vinyl acetate (VA) have less ordered structure for the same amount of DVB. Methacrylonitrile and DVB copolymers obtained under the same conditions as AN and DVB are amorphous.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00445975
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  • 6
    Electronic Resource
    Electronic Resource
    The use of modified acrylic copolymers for the preparation of immunoadsorbents (1990)
    Springer
    Chromatographia 30 (1990), S. 428-431 
    Details
    ISSN: 1612-1112
    Keywords: Column liquid chromatography ; Immunoaffinity ; Modified acrylic copolymers ; Antibody anti-human serum albumin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Copolymer beads from acrylonitrile and ethyl either butyl acrylate or vinyl acetate, with amino, hydroxyl or carboxyl groups were activated with glutaraldehyde or water-soluble carbodiimide and coupled to human serum albumin. The obtained immunoadsorbents were applied to the isolation of anti-human albumin anibody from rabbit antiserum. Among the 22 studied copolymers only a few showed satisfactory effectiveness for immunoaffinity chromatography, similar to that noted for immunoadsorbents from commerical polymers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02328511
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  • 7
    Electronic Resource
    Electronic Resource
    Influence of pentaerythritol triacrylate acrylic carrier swelling on immobilization of enzymes (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 58 (1995), S. 1317-1323 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Suspension copolymerization and modification of pentaerythritol triacrylate (PENTA)-butyl acrylate (BA) matrices with ethylenediamine (EtDA) are discussed. It is shown that aminolysis in water solution offers gel structure carriers with small pore radii (about 3 nm). These carriers are characterized by the high swelling and sharp correlation between the pH value and the specific volume. The enzymes (acylase, glucoamylase, and peroxydase) are immobilized by means of the glutaraldehyde method. The best matrix seems to be copolymers modified in a 95% solution of ethylenediamine in water. Preparations do not lose activity after 1 month storage at 4°C. © 1995 John Wiley & Sons, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1995.070580813
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  • 8
    Electronic Resource
    Electronic Resource
    Structure of some styrene-divinylbenzene copolymers (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 56 (1995), S. 433-439 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Structures of copolymers of styrene and divinylbenzene (50% crosslinking degree) prepared in suspension polymerization in the presence of mixtures of nonsol (heptane or decane) and sol (toluene or tetralin) diluents were investigated. The studies showed that the diluents enriched with nonsol solvents resulted in an increase of pore volumes and posities for the prepared copolymers. The sol diluents affected mainly the gel regions of the polymer matrices. Isotropic swelling of the matrices prepared in the presence of toluene is the opposite of the effect observed for tetralin family copolymers. The virtual difference of both kind of matrices was demonstrated in the sorption of phenol. The tetralin family copolymers were characterized by a prolonged time for column breakthrough. © 1995 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1995.070560404
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  • 9
    Electronic Resource
    Electronic Resource
    Mechanical behavior and structure of single beads of homogeneous and macroporous styrene-divinylbenzene copolymers (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 27 (1982), S. 277-288 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The stress-stain and ultimate behavior in compression of homogeneous and macroporous beads of styrene-divinylbenzene copolymers has been investigated in the dry state or in equilibrium with toluene, acetone, methanol, and water. The penetration modulus A indicates sensitively the transition from the glassy into the rubbery state induced by an increase in temperature or swelling. For macroporous copolymers, A of the glassy polymers is mainly determined by the porosity P, while in the rubbery region it primarily depends on the matrix structure (degree of crosslinking and concentration and composition of the diluent). The high value of the slope s of the A vs. P dependence (s ∼ -3) for macroporous copolymers is evidence of the complex deformation mechanism (bucking of pore walls). The relative compression at break, εb=0.3-0.4, is independent of the composition, and the compressive strength is roughly proportional to the penetration modulus.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1982.070270129
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