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  • 1
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 44 (1961), S. 173-178 
    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: The layers of potato starch grains as seen in the light microscope can be resolved into much finer submicroscopic lamellae which evidently represent the real growth rings of these spheroids.
    Notes: Die lichtmikroskopisch sichtbaren Schichten der Kartoffelstärkekörner lassen sich in submikroskopische Feinstlamellen auflösen, die offenbar die eigentlichen Zuwachsringe dieser Sphärite vorstellen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 62 (1963), S. 25-30 
    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: Comparable to cellulose of primary plant cell walls, bacterial cellulose of Acetobacter xylinum consists of elementary fibrils with a diameter of about 35 Å containing only around 36 chain molecules. These behave as rather brittle crystalline needles indicating high crystallinity due to a homogeneous chain lattice. Considered as antiparallel cellulose molecules, almost all chain pairs of the elementary fibril are situated in its surface. The hypothesis that pairs of antiparallel glucose residues can be added at the end of the microfibril only to its surface could explain the constancy and the unexpectedly small value of the diameter of the elementary fibrils.
    Notes: Die Bakteriencellulose von Acetobacter xylinum besteht wie die Cellulose der pflanzlichen Primärwände aus Elementarfibrillen, die mit 35 Å Durchmesser (Fig. 1, 2) nurmehr etwa 36 Kettenmoleküle enthalten (Fig. 3). Diese verhalten sich wie spröde Kristallnadeln, woraus auf ein homogenes Kettengitter geschlossen wird. Als antiparallele Cellulosemoleküle betrachtet, liegen praktisch alle Kettenpaare in der Oberfläche der Elementarfibrille (Fig. 4). Die Voraussetzung, daß Paare von antiparallelen Glukoseresten beim Anbau an die Enden der Fibrillen nur in der Oberfläche eingefügt würden, könnte die Konstanz und die Kleinheit des Durchmessers der Elementarfibrillen verständlich machen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 3 (1978), S. 119-126 
    ISSN: 0721-3115
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A finite difference Eulerian computer code with some very useful Lagrangian features is employed to study the impact of a projectile on a heavily confined, inert, solid explosive. Temperature rise due to shock compression and plastic deformation in both the explosive and the metal confinement is estimated. It is concluded that in situations where the shock is weak and the explosive does not initiate shortly after the projectile impact, the possibility of it so doing, due to plastic deformation, at a later time cannot be discounted.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Further work on the polymerization of 1,3-cyclohexadiene by the action of Zieglertype catalysis and by cationic initiation has been carried out and polymers with an inherent viscosity of 0.1-0.19 have been obtained consistently. Dehydrogenation of the poly-1,3-cyclohexadiene by halogenation followed by pyrolysis has given good conversion to a polyphenyl which has some units which are incompletely aromatized. This polymer has very good heat stability but is not a useful polymer for plastic purposes.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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