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  • Polymer and Materials Science  (2)
  • dispersion  (1)
  • 1995-1999  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Macromolecular Rapid Communications 18 (1997), S. 261-265 
    ISSN: 1022-1336
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Polymerization of acrylamide with the redox couple Fe(III)/thiourea in the presence of the mineral clay montmorillonite has been investigated. Polyacrylamide is obtained in good yield having molecular weight (ca. 0.7-2.5 × 106) approximately one order of magnitude higher than without clay. Apparently, the locus of polymerization is the interlayer space of the clay.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 24 (1996), S. 113-118 
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Aninsitu method is described for studying the reactions between thin titanium films and SiO2 or Na2O · 2SiO2 glasses. It involves fracturing the glass under ultrahigh vacuum conditions, depositing titanium thin films on the fractured surfaces and then characterizing interface reactions using x-ray photoelectron spectroscopy (XPS); the whole process is carried out without interrupting the ultrahigh vacuum. Owing to the extremely clean interface formed by this method, titanium silicide forms in both glass systems, even at room temperature. However, for glass surfaces that have been chemically cleaned in air, silicide formation is suppressed because carbon species from contamination at the interface consume the titanium film. The superiority of theinsitu method to investigate thin film reactions is thus established.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    International Journal for Numerical and Analytical Methods in Geomechanics 21 (1997), S. 495-504 
    ISSN: 0363-9061
    Keywords: monoclinic ; shear waves ; reflection ; transmission ; dispersion ; amplitude ratio ; Engineering ; Civil and Mechanical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Notes: This paper deals with the propagation, reflection and transmission of shear waves in monoclinic media. The dispersion equation for a monoclinic layer overlying a monoclinic half-space has been obtained and curves are plotted. The amplitude ratios for both the reflected and transmitted waves due to reflection of shear waves at the interface of two monoclinic half-spaces have also been computed and the numerical results are presented graphically. The results are compared with the isotropic case. It has been observed that, in monoclinic media, the amplitude ratios for reflected and transmitted wave increases approximately by 25 and 50 per cent respectively, in comparison to the isotropic case. © 1997 John Wiley & Sons, Ltd.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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