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  • 1975-1979  (5)
  • Polymer and Materials Science  (5)
  • (Porcine aorta)
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  • 1
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Assuming a monomodal distribution function, which is defined by two parameters, the scattering curves depending on the particle size and polydispersity were calculated. The range of validity of the Rayleigh-Debye approximation was investigated quantitatively. A new method for converting the parameters, obtained by Rayleigh-Debye to the correct values provided by the Mie theory was developed.
    Notes: Unter Voraussetzung einer monomodalen zweiparametrigen Verteilungsfunktion wurden Streulichtkurven in Abhängigkeit von Teilchengröße und Polydispersität berechnet. Der Gültigkeitsbereich der Rayleigh-Debye-Näherung wurde quantitativ untersucht und ein Korrekturverfahren zur Umrechnung der nach Rayleigh-Debye ermittelten Parameter in die richtigen, der Mie-Theorie entsprechenden Werte entwickelt.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 30 (1979), S. 420-425 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: A survey on the reactions and synthesis of polymers including boronic acid groups is provided, particularly with respect to their application. The polymers substituted by boronic acid can be obtained by polymer synthesis as well as by modification of synthetic and native polymers. Among the reactions performed until now with polymers substituted by boronic acid the polycondensation, particularly with polyols, is the dominating reaction. The possible fields of application are predominantly the analytical and preparative separation of sugars, native substances containing carbohydrates, and other polyols.
    Notes: Unter Betonung von Applikationsmöglichkeiten wird ein Überblick über Reaktionen und Synthesen von Polymeren mit Boronsäuregruppen gegeben. Mit Boronsäure substituierte Polymere sind sowohl auf dem Wege der Polymerisation und Polykondensation als auch durch chemische Modifizierung synthetischer und natürlicher Polymere zugänglich. Unter den bisher an mit Boronsäure modifizierten Polymeren durchgeführten Reaktionen dominieren Kondensations reaktionene, vor allem mit Polyolen. Die potentiellen Einsatzgebiete für derartige Polymere liegen vor allem in der analytischen und präparativen Trennung von Zuckern, kohlenhydrathaltigen Naturstoffen und anderen Polyolen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 30 (1979), S. 717-719 
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Copolymers of maleic anhydride with styrene, propylene, and vinyl acetate are converted partially to N-aryl maleimide copolymers by reaction with N-sulfinyl anilines.
    Notes: Maleinsäureanhydrid-Copolymere des Styrens, Propylens und Vinylacetats werden durch Umsetzung mit N-Sulfinyl-anilinen partiell in N-Aryl-maleinimid-Copolymere übergeführt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Uncrosslinked PVC-g-styrene-co-methyl methacrylate is synthesized in dimethylformamide with 90 per cent graft efficiency by initiation the grafting with a chromous acetate/1-morpholinocyclohexene system. Grafting and graft efficiency are studied as a function of temperature and of the concentration of initiator and grafting monomers.
    Notes: Unvernetzte PVC-g-Styren-co-Methylmethacrylat-Polymere lassen sich in Dimethylformamid mit 90% Propfausbeute in Gegenwart eines Chrom(II)-acetat/Morpholinocyclohexen-Initiatorsystems synthetisieren. Es werden Propfgrad und Propfausbeute in Abhängigkeit von der Temperatur sowie der Monomer- und Initiatorkonzentration untersucht.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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