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  • Chemistry  (3)
  • 1965-1969  (3)
  • 1920-1924
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  • 1
    Electronic Resource
    Electronic Resource
    Analysis of data in reverse osmosis with porous cellulose acetate membranes used (1967)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 13 (1967), S. 497-503 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Reverse osmosis experimental data for some inorganic salts with the porous cellulose acetate membrane used were analyzed to obtain their diffusivity in the membrane. A parameter including the diffusivity was found constant for each film in the concentration range investigated for a particular solute at a particular pressure. This parameter was also independent of feed flow rate. The effect of operating pressure on the parameter was found to depend on the film shrinkage. Mass transfer coefficient between the membrane and the feed solution was also obtained by the analysis, and this value was independently checked by the diffusion current method. Coincidence of these coefficients shows that the ordinary mass transfer coefficient can be used in reverse osmosis with the appropriate driving force. These facts facilitate the prediction of solute separation and membrane throughput rate in reverse osmosis.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690130319
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation of polyquinolones (1968)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 117 (1968), S. 203-209 
    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: Suceinylbernsteinsäurediäthylester wurde mit m-Phenylendiamin Oder 4.4′-Diamino-diphenyläther kondensiert. Die erhaltenen Polyamine wurden zu Polychinolon Oder Poly-oxychinacridon oxydiert und cyclisiert. Beim Cyclisieren des Polyamins ohne Oxydation wurde Polydihydrochinolonochinolon gebildet. Die thermische Stabilität dieser Polymeren wurde unter verschiedenen Bedingungen untersucht.
    Notes: Diethyl succinosuccinate was condensed with m-phenylenediamine or 4.4′-diamino-diphenyl ether. The resulted polyamines were oxidized and cyclized to polyquinolone, or polyoxyquinacridone. The cyclization of the polyamine without oxidation produced polydihydroquinolonoquinolone. The thermal stability of these polymers were measured under various conditions.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1968.021170118
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  • 3
    Electronic Resource
    Electronic Resource
    The time dependence of crystal orientation of polyethyleneSupported in part by a contract from the Office of Naval Research and by grants from the Petroleum Research Fund and Monsanto Corporation. (1967)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 5 (1967), S. 339-344 
    Details
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1967.110050413
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