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  • 1
    Electronic Resource
    Electronic Resource
    Chemical transformations of polymers.Presented in part at the IUPAC International Symposium on Macromolecules Aberdeen, September 1973. Part XVII: J. Polym. Sci. C, in press. XVIII. Mercury-complexing polymers with pendent thiol groups. Preparation and medical uses (1975)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 44 (1975), S. 67-75 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Poly(vinyltoluol-α-thiol)und Poly(1-methacryloyl-oxyäthan-2-thiol) werden durch polymeranaloge Hydrolyse der entsprechenden polymeren Isothiuroniumsalze hergestellt. Die Adsorption von Schwermetallen aus Lösungen niedriger Konzentrationen wurde für beide polymeren Thiole untersucht. Die Affinität steigt bei Experimenten in vitro in der Reihe Pb 〈 Ag 〈 Hg an. Bei Experimenten in vivo wurde die Resorption des Quecksilbers im Darmtrakt von Ratten durch das Methacrylatpolymere verhindert, wenn Quecksilberchlorid oder Methylquecksilberchlorid eingesetzt wurde, nicht aber im Falle von Phenylquecksilberchlorid.
    Notes: Poly(vinyltoluene-α-thiol) and poly(1-methacryloyloxyethane-2-thiol) were prepared by the polymeranalogous hydrolysis of the respective polymeric isothiuronium salts. The sorption of heavy metals from low-concentrated solutions was studied for both thiol polymers. Affinity increases in the series Pb 〈 Ag 〈 Hg in experiments in vitro. In vivo the mercury resorption in the gastrointestinal tract of rats was partly blocked by the methacrylate derivative if mercuric chloride or methylmercurichloride was administered (in the case of phenylmercurichloride the polymeric thiol was ineffective).
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1975.050440105
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Detection of pathological changes of proteins by peptide mapping after protein digestion by use of oriented immobilized proteinases (1996)
    Chicester [u.a.] : Wiley-Blackwell
    Journal of Molecular Recognition 9 (1996), S. 360-363 
    Details
    ISSN: 0952-3499
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Diagnostic methods for detecting gastric diseases using chymotryptic digestion of pepsin are discussed. Peptide maps can be prepared using reversed-phase high-performance liquid chromatography. Batchwise chromato- graphy by use of membranes with immobilized Tyr(I2) was used for the isolation of pepsin from gastric mucosa extract or from human blood serum. Enzymes immobilized using suitable antibodies or through their sugar moieties can be used for the preparation of peptide maps because such enzymes share good steric accessibility to their active binding sites and possess increased thermal stability. Biospecific adsorption of proteins to immunosorbents combines the simultaneous isolation of these enzymes with their oriented immobilization. Proteins were stabilized by hydrophilization through the attachment of saccharide residues containing galactose residues. These residues could be activated by oxidation using galactose oxidase and subsequently immobilized to hydrazide-containing solid supports.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 3
    Electronic Resource
    Electronic Resource
    Solution properties of polymers of pyridinium and ammonium methacrylatesThis paper originally appeared in the Journal of Polymer Science, Physics Edition, Vol. 11, 1803-1915 (1973). Since an editorial error caused it to be printed with wrong illustrations, we are reprinting it here in correct form..First Published September 1, 1973 (1974)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 12 (1974), S. 1941-1953 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Solution properties of poly[1(2-hydroxyethyl)pyridiniumbenzene sulfonate methacrylate] and poly[1(2-hydroxyethyl)trimethylammoniumbenzene sulfonate methacrylate] were studied. Within a certain concentration range of some added low molecular weight electrolytes, phase separation occurs. The dependence of intrinsic viscosity on molecular weight was determined and the steric factor estimated for both polymers. For nonaqueous solvents, an extrapolation of the dependence of the refractive index increment of the polymer on the refractive index of the solvent leads to an apparent refractive index of the polymer, different from the refractive index determined directly by the immersion method. Some peculiarities of light scattering in solutions with no electrolyte added are mentioned.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1974.180120916
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  • 4
    Electronic Resource
    Electronic Resource
    Solution properties of polymers of pyridinium and ammonium methacrylates (1973)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 11 (1973), S. 1803-1815 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Solution properties of poly[1(2-hydroxyethyl)pyridiniumbenzene sulfonate methacrylate] and poly[1(2-hydroxyethyl)trimethylammoniumbenzene sulfonate methacrylate] were studied. Within a certain concentration range of some added low molecular weight electrolytes, phase separation occurs. The dependence of intrinsic viscosity on molecular weight was determined and the steric factor estimated for both polymers. For nonaqueous solvents, an extrapolation of the dependence of the refractive index increment of the polymer on the refractive index increment of the polymer on the refractive index of the solvent leads to an apparent refractive index of the polymer, different from the refractive index determined directly by the immersion method. Some peculiarities of light scattering in solutions with no electrolyte added are mentioned.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1973.180110912
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Oligomers of phenylpropiolonitrile and their chromatographic separation (1970)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 138 (1970), S. 99-109 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Oligomere, hergestellt durch anionische Polymerisation von Phenylpropiolsäurenitril wurden durch Elutionschromatographie an Calciumhydroxid getrennt. Die Trennung verläuft nicht nur nach dem Molekulargewicht, sondern hauptsächlich auf Grund der cis-trans-Isomerie. In den isolierten Fraktionen wurden vier isomere Trimere gefunden, woraus hervorgeht, daß die Polymerisation nicht stereospezifisch verläuft.
    Notes: Oligomeric products of the anionic polymerization of phenylpropiolonitrile were separated by elution chromatography on calcium hydroxide. The separation occurs not only according to the molecular weight, but mainly due to the cis-trans-isomerism. Four isomeric trimers were found among the isolated fractions, which demonstrated the polymerization to be non-stereospecific.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1970.021380111
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    Paper (German National Licenses)
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