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  • 1
    Electronic Resource
    Electronic Resource
    Construction of template ligand sites in polymeric matrices with dithizone (1997)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 35 (1997), S. 3729-3734 
    Details
    ISSN: 0887-624X
    Keywords: template polymer ; dithizone ; polystyrene ; poly(methylethacrylate) ; poly(vinyl chloride) ; polycarbonate ; copper ; nickel ; zinc ; cobalt ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal ion specific template ligand sites were developed by physically immobilizing dithizone molecules oriented according to a particular complex geometry in various polymeric films. Four polymeric systems, polystyrene, poly(methyl methacrylate), poly(vinyl chloride), and polycarbonate, were used for making template sites for Cu2+, Ni2+, Zn2+, and Co2+ ions. A high degree of specificity could be achieved independent of stability constants, though about half of the ligand sites were unavailable to the metal ions. © 1997 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 35: 3729-3734, 1997
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    Analysis of degradation products by thermal volatilization analysis at subambient temperatures (1977)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 15 (1977), S. 2381-2392 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In the subambient thermal volatilization analysis (TVA) technique, degradation products initially at -196°C are allowed to warm up to ambient temperature in a controlled manner under vacuum conditions, and volatilization from the sample tube to a trap at -196°C is monitored by means of a Pirani gauge. The technique is discussed in relation to earlier TVA work in which volatilization from a heated polymer sample was followed. Design and operation of a subambient TVA system are described, and examples of the application of the technique to the study of the degradation products of seven polymers are considered.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1977.170151008
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Degradation of polymer mixtures. IX. Blends of polystyrene with polybutadiene (1978)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 16 (1978), S. 2169-2181 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The degradation of cis-1,4-polybutadiene, polystyrene, and blends of PB and PS has been studied by thermogravimetry, thermal volatilization analysis, and differential scanning calorimetry. Volatile products have been investigated and separated by subambient TVA and characterized spectroscopically. In the degradation of the blends, there is no change in the nature of the volatile products of degradation, but the rate of degradation of the PS component is markedly reduced. The PB component is the first to break down, and during the initial period of degradation of the PB, the PS degradation is apparently inhibited. It is suggested that some of the volatile products of decomposition of PB, most notably 4-vinylcyclohexene, may diffuse into the PS phase in the blend and act as radical inhibitors.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1978.170160907
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  • 4
    Electronic Resource
    Electronic Resource
    Template effects in chelating polymers (1982)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 20 (1982), S. 1609-1622 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Poly(4′-methyl-4-vinyl-2,2′-bipyridine) has been prepared as have various copolymers with divinylbenzene. When polymerization is carried out in the presence of metal ions (Ni2+, Co2+, Cu2+) a metal-containing copolymer is obtained which, when the metal ion is removed with acid, retains some memory of the original chelating metal.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1982.170200621
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    Paper (German National Licenses)
    Fulltext
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