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Determination of the diffusion coefficients of dyes in polymer media by the absorption method with a high spatial resolution

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Abstract

The coefficients of diffusion of coumarin 7 in polyurethaneacrylate are determined by a new optical absorption method based on measurement of the absorption gradient at the boundary between the colored and colorless sections of the polymer. The dependence of the diffusion coefficient on concentration is found. The obtained values for the diffusion coefficients of the dye in an elastic matrix allow one to consider that the gradient optical elements in elastomers will be characterized by a relatively large lifetime.

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Authors and Affiliations

  1. Institute of Physics, National Academy of Sciences of Ukraine, 46 Nauka Ave., 03039, Kiev, Ukraine

    S. A. Volyanyuk, V. I. Bezrodnyi & E. A. Tikhonov

Authors
  1. S. A. Volyanyuk
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  2. V. I. Bezrodnyi
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  3. E. A. Tikhonov
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Correspondence to S. A. Volyanyuk.

Additional information

Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 67, No. 4, pp. 457–460, July–August, 2000.

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Volyanyuk, S.A., Bezrodnyi, V.I. & Tikhonov, E.A. Determination of the diffusion coefficients of dyes in polymer media by the absorption method with a high spatial resolution. J Appl Spectrosc 67, 623–628 (2000). https://doi.org/10.1007/BF02681295

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  • DOI: https://doi.org/10.1007/BF02681295

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