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  • 1
    Electronic Resource
    Electronic Resource
    Kinetics of donor-acceptor complex polymerization. IV. Limiting yield in the butadiene-acrylonitrile copolymerization (1973)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 11 (1973), S. 275-278 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An analysis of the kinetic equation proposed for donor-acceptor systems indicated that the polymer yield at a given time should attain limiting value with increase in rate of initiation. It was essential that the equilibria not be shifted by temperature variation, and the change in rate of initiation was achieved by controlled current passage through the solution. A definite plateau in the yield of polymer was obtained. This was shown not to be due to diffusion control of the rate of initiation.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1973.170110123
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation of poly(diphenyl phosphazene) (1968)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 6 (1968), S. 3163-3165 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The preparation of substituted polyphosphazenes has been briefly surveyed. A method of synthesis of a fully substituted poly(diphenyl phosphazene) has been investigated. The product has been characterized and thermogravimetric analysis carried out. The volative products of pyrolysis have been identified and the hydrolytic stability of the polymer tested.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1968.150061119
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  • 3
    Electronic Resource
    Electronic Resource
    Kinetics of donor-acceptor complex polymerization. III. Assessment of some approximations in the kinetics (1972)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 10 (1972), S. 2565-2572 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The mathematical solution of the equations derived from a kinetic scheme previously developed for donor-acceptor complex polymerization was based on steady-state conditions and the applicability of initial concentration conditions over a range of conversion. These assumptions are scrutinized and tested by computer simulation and by the exact differential equations utilizing Runge-Kutta method. The analysis shows that for case I conditions of low concentration of complexing-agent, the degree of conversion is not critical and that the previous approximate solutions are valid. The steady-state and non-steady-state conditions are compared, and the range of validity of the assumptions is established. The approximate solutions are found inapplicable in the instances of non-steady-state conditions coupled with a low concentration of either monomer.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1972.150100904
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