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  • 1
    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: Aminoharz-Mikrokapseln wurden aus partiell veretherten Melamin-Formaldehyd-Harzen ohne weitere Zusatzstoffe hergestellt. Als Modellsubstanz für das Kernmaterial wurde Methylparathion verwendet. Die Einflüsse verschiedener Parameter auf den Verkapselungsprozeß, die Kapselmorphologie und einige Kapseleigenschaften wurden untersucht. Mit der beschriebenen Methode lassen sich Kapseln mit mittleren Durchmessern zwischen 5 und 50 μm und Wanddicken zwischen 30 und 300 nm herstellen. Erste Vorstellungen zum Mechanismus der Kapselbildung werden diskutiert.
    Notes: Amino resin microcapsules are prepared from partial etherified melamine-formaldehyde resins without other additives. As model substance for the core material mainly methylparathion was used. The influences of different parameters on the encapsulation process, the capsule morphology and some capsule properties were investigated. It is shown that by this method capsules with average diameters between 5 and 50 μm and a wall thickness between 30 and 300 nm can be obtained. The encapsulation of liquids as well as solids is possible. First ideas to the mechanisms of the capsule formation are discussed.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
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