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Structure-property relationships in thin films and membranes

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Abstract

The molecular-scale species distributions and intermediate-scale structure of silicate sols influence the microstructures of the corresponding thin films prepared by dip-coating. Using multi-step hydrolysis procedures, we find that, depending on the sequence and timing of the successive steps, the species distributions (determined by 29Si NMR) and intermediate scale structure (determined by SAXS) can change remarkably for sols prepared with the same nominal composition. During film formation, these kinetic effects cause differences in the efficiency of packing of the silicate species, leading to thin film structures with different porosities.

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Authors and Affiliations

  1. Ceramic Synthesis and Inorganic Chemistry Department 1846, M.S. 1349, Sandia National Laboratories, 87185, Albuquerque, NM

    C. J. Brinker

  2. UNM/NSF Center for Micro-Engineered Ceramics, University of New Mexico, 87131, Albuquerque, NM

    C. J. Brinker

  3. UNM/NSF Center for Micro-Engineered Ceramics, University of New Mexico, 87131, Albuquerque, NM

    N. K. Raman

  4. Ceramic Synthesis and Inorganic Chemistry Department 1846, M.S. 0607, Sandia National Laboratories, 87185, Albuquerque, NM

    M. N. Logan

  5. UNM/NSF Center for Micro-Engineered Ceramics, University of New Mexico, 87131, Albuquerque, NM

    R. Sehgal

  6. Properties of Organic Materials Department 1812, M.S. 0367, Sandia National Laboratories, 87185, Albuquerque, NM

    R. -A. Assink

  7. UNM/NSF Center for Micro-Engineered Ceramics, University of New Mexico, 87131, Albuquerque, NM

    D. -W. Hua & T. L. Ward

Authors
  1. C. J. Brinker
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  2. N. K. Raman
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  3. M. N. Logan
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  4. R. Sehgal
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  5. R. -A. Assink
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  6. D. -W. Hua
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  7. T. L. Ward
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Brinker, C.J., Raman, N.K., Logan, M.N. et al. Structure-property relationships in thin films and membranes. J Sol-Gel Sci Technol 4, 117–133 (1995). https://doi.org/10.1007/BF00491678

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  • DOI: https://doi.org/10.1007/BF00491678

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