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  • 1
    Electronic Resource
    Electronic Resource
    Thermal Degradation of Cotton Cellulose (1999)
    Springer
    Journal of thermal analysis and calorimetry 55 (1999), S. 93-98 
    Details
    ISSN: 1572-8943
    Keywords: degradation ; DTA ; flame retardant ; IR ; pyrolysis ; TG
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The thermal degradation of cotton cellulose treated with chemical mixtures containing P and N was studied by thermal analysis, infrared spectroscopy, Char yield and limiting-oxygen-index (LOI). Our experiments demonstrated the following facts. The temperatures and activation energies of pyrolysis were lower for cotton cellulose treated with flame retardants than those for untreated samples and the values of Char yield and LOI were greater for treated cotton than those for untreated one.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010132121811
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Study on the Thermal Behaviour and Flammability of the Modified Polyacrylonitrile Fibers (2000)
    Springer
    Journal of thermal analysis and calorimetry 63 (2000), S. 501-506 
    Details
    ISSN: 1572-8943
    Keywords: apparent activation energy ; char residue ; metal-containing PAN fibers ; pyrolysis ; thermal analysis ; thermal degradation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The effects of some kinds of metal ions used as chemical modifications on the thermal properties of the modified polyacrylonitrile (PAN) fibers were studied by DTA, TG, GC and cone calorimetry. The apparent activation energies for the decomposition of the unmodified and modified PAN fibers were determined using Kissinger equation and Broido equation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010181618305
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Nuclear spin-lattice relaxation times of metallic antimony at low temperatures (1995)
    Springer
    Journal of low temperature physics 101 (1995), S. 611-615 
    Details
    ISSN: 1573-7357
    Keywords: 07.20 Dt ; 76.60.-k ; 72.15.Lh
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have used pulsed Nuclear Quadrupole Resonance (NQR) techniques to measure the nuclear spin-lattice relaxation times in antimony at low temperatures. High quality echoes with strong signal/noise ratios were only observed for finely powdered samples of high purity (99.9999%). The samples were carefully annealed and diluted with fine silica to below the percolation limit to minimize RF heating. The powder mixture was immersed in liquid3He to ensure good thermal contact to a sintered silver heat exchanger attached to a copper nuclear demagnetization refrigerator. We report the temperature dependence of the nuclear spin-lattice relaxation times for the multiple level nuclear spin system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00753362
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    Paper (German National Licenses)
    Fulltext
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