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  • 1
    Electronic Resource
    Electronic Resource
    High conversion polymerization. VI. Detailed examination of the kinetic modelFor Part V see ref. 3. (1980)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 18 (1980), S. 241-249 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A previously developed model which has been used to describe the kinetic behavior of free radical polymerization in the region of the gel effect is here subjected to a detailed quantitative examination. It is shown, using data for the polymerization of methyl methacrylate, that the quasi-steady-state assumption is valid during the gel effect, and that the model provides a good description of the chain lengths and concentrations of different species present in the reaction. The postulate that primary radical termination becomes important as the gel effect advances is tested and found to be true.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1980.170180122
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  • 2
    Electronic Resource
    Electronic Resource
    Comparison of the precision of estimation of copolymerization reactivity ratios by current methods (1980)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 18 (1980), S. 251-257 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Six recently proposed methods for analyzing copolymerization composition data have been compared to a nonlinear least-squares analysis to ascertain the precision of the six methods in determining reactivity ratios. Data used were simulated for five hypothetical monomer pairs with three different types of experiment design and contained error structures similar to those observed experimentally. The results of the comparisons suggest that retrospective analyses of existing copolymerization data should only be done with a nonlinear least-squares analysis. For new data, the design of experiments is of great importance, and when done properly allows the use of some of the linear least-squares methods of analysis.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1980.170180123
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  • 3
    Electronic Resource
    Electronic Resource
    Copolymerization with depropagation. III. Composition and sequence distribution from probability considerations (1970)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 8 (1970), S. 699-710 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Elementary probability considerations have been used to derive completely general equations which describe both the sequence distributions and compositions to be expected for copolymerizations which follow kinetic models having complete reversibility for all propagation steps. It is shown that previously derived composition equations for both reversible and irreversible systems are special cases of the general equations derived herein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1970.150080313
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  • 4
    Electronic Resource
    Electronic Resource
    Kinetics of polymerization of styrene initiated by substituted benzoyl peroxides. IV. Decomposition induced by substituted diethylanilines (1967)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 5 (1967), S. 1789-1795 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Equilibrium complex formation between symmetrically substituted benzoyl peroxides and ring-substituted N,N-diethylanilines has been quantitatively measured. From the results the rate constant for the unimolecular decomposition of the complexes, producing an initiating free radical, is found to be approximately 1012 exp {(-25 X 103)/RT}. The data obtained are consistent with a previously postulated mechanism for radical production in the presence of vinyl monomers.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1967.150050726
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