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  • 1
    Electronic Resource
    Electronic Resource
    Time-resolved small-angle light scattering for the study of phase separation kinetics in bisphenol-a polycarbonate/poly(methy methacrylate) blends (1995)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 35 (1995), S. 34-40 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: An automated, solid-state small-angle light scattering apparatus has been constructed for the investigation of polymers; the main features of this system are a bidimensional CCD (charge coupled device) detector with 12-bit resolution and custom-made, user-friendly software for the acquisition and treatment of the scattering data. The miscibility and phase separation kinetics of several bisphenol-A polycarbonate/poly(methyl methacrylate) blends have been investigated using this apparatus. It was found that the rate of phase separation can be altered significantly by replacing part of the polydisperse poly(methyl methacrylate) (PMMA) in the blends by monodisperse PMMA.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760350106
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal Degradation of the Binder in GAP-Based Propellants (1997)
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 22 (1997), S. 193-197 
    Details
    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: The long-term stability of the binder in GAP-based propellants is investigated in this study. Thermal degradation of the polymer network, being related to the extractable proportion of GAP, is quantified by means of Fourier transform infrared (FTIR) spectroscopy while the degradation products are analysed by size exclusion chromatography (SEC). Our results concerning the aging of four different formulations at 80°C demonstrate the necessity to add a stabilizer like diphenylamine (DPA) to the propellants. Other additives like MgO and TEPANOL are also shown to have a significative stabilizing effect.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prep.19970220402
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    Paper (German National Licenses)
    Fulltext
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