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  • time-resolved spectroscopy  (2)
  • Corn starch  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Rheological study of biodegradable blends of starch and polyvinyl alcohol (1995)
    Springer
    Journal of polymers and the environment 3 (1995), S. 161-167 
    Details
    ISSN: 1572-8900
    Keywords: Corn starch ; polyvinyl alcohol ; biodegradable blends ; rheology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The rheological behavior of biodegradable blends of starch and poly(vinyl alcohol) (PVOH) was measured as a function of temperature, shear rate, and moisture content using a capillary rheometer. An excellent correlation was found with a rheological model which was used as a means to characterize the influence of starch/PVOH content as well as a qualification of the viscosity for simulation studies. This model consisted of a power law dependence on shear rate, an Arrhenius dependence on temperature, and an exponential dependence on moisture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02068467
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nonlinear Effects in Chromophore Doped Sol-Gel Photonic Materials (1997)
    Springer
    Journal of sol gel science and technology 9 (1997), S. 169-181 
    Details
    ISSN: 1573-4846
    Keywords: aluminosilicate gel ; non-linear absorption ; metalloporphyrin ; spirooxazine ; time-resolved spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Linear and nonlinear optical effects have been studied in chromophore-doped gel hosts. Tetra-4-sulfonatophenylporphyrinatocopper(II) (CuTPPS),and1, 3-dihydro-1,3,3-trimethylspiro[2H-indole-2, 3′-[3H]-naphth[2,1-b][1,4]oxazine] (SP spirooxazine) species were entrapped within porous aluminosilicate hosts.Optical limiting effects and radiative up-conversion behavior in the CuTPPS-doped materials are described, and a six-level model is proposed based on experimental findings. Spirooxazine-containing specimens exhibiting photochromic effects were prepared, and cw and time-resolved spectroscopy methods are used to assess excited state band structures and the nature of guest-host interactions in the resultant gels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026469314746
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Nonlinear effects in chromophore doped sol-gel photonic materials (1997)
    Springer
    Journal of sol gel science and technology 9 (1997), S. 169-181 
    Details
    ISSN: 1573-4846
    Keywords: aluminosilicate gel ; non-linear absorption ; metalloporphyrin ; spirooxazine ; time-resolved spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Linear and nonlinear optical effects have been studied in chromophore-doped gel hosts. Tetra-4-sulfonatophenylporphyrinatocopper(II) (CuTPPS), and 1,3-dihydro-1,3,3-trimethylspiro[2H-indole-2,3′-[3H]-naphth[2,1-b][1,4]oxazine] (SP spirooxazine) species were entrapped within porous aluminosilicate hosts. Optical limiting effects and radiative up-conversion behavior in the CuTPPS-doped materials are described, and a six-level model is proposed based on experimental findings. Spirooxazine-containing specimens exhibiting photochromic effects were prepared, and cw and time-resolved spectroscopy methods are used to assess excited state band structures and the nature of guest-host interactions in the resultant gels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02439397
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    Paper (German National Licenses)
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