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  • 1985-1989  (1)
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  • 1
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Insoluble spherical xerogel particles of aluminium carboxymethyl cellulose are prepared by partial drying of ionotropic gels formed by dropping aqueous solutions of sodium carboxymethyl cellulose into crosslinking solutions of aluminium salts. The swelling ability of the porous and mechanically stable carriers, which are surrounded by a dense surface, rises by partial transformation of carboxy groups into the sodium salts and diminishes with growing content of free acid groups and increasing temperature of drying.
    Notes: Unlösliche sphärische Aluminiumcarboxymethylcellulose-Xerogelpartikel werden durch partielle Trocknung ionotroper Gele hergestellt, die durch Eintropfen wäßriger Lösungen von Natriumcarboxymethylcellulose in vernetzende Aluminiumsalzlösungen entstehen. Das Quellvermögen der porösen und mechanisch stabilen Trägermaterialien, die von einer dichten Außenschicht umgeben sind, erhöht sich durch partielle Umwandlung von Carboxygruppen in die Natriumsalze; es verringert sich mit zunehmendem Gehalt an freien Säuregruppen und steigender Trocknungstemperatur.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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