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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 33 (1982), S. 241-245 
    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: The phase transition process of cotton linters treated by sodium hydroxide solution has been studied with respect to NaOH concentration by means of a special wide-angle X-ray method of quantitative phase analysis. As a result the lattice of smaller or more disordered crystallites was found to change to cellulose II at lower NaOH concentrations. On partial alkalization the lattice transition from cellulose I to sodium cellulose I was observed to be a partially reversible process.
    Notes: Der durch Natronlaugenbehandlung bei Baumwollinters hervorgerufene Gitterumwandlungsprozeß wurde in Abhängigkeit von der Laugenkonzentration mit Hilfe eines speziellen Röntgen-Weitwinkelverfahrens zur quantitativen Phasenanalyse untersucht. Es wurde gefunden, daß die Gitterumwandlung der kleineren bzw. schlechter geordneten Kristallite in Cellulose II bei niedrigeren Laugenkonzentrationen erfolget und daß bei einer partiellen Alkalisierung der Modifikationswechsel von Cellulose I zu Natronecellulose I reversibel verlaufen kann.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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