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Updated: Mar 5, 2026

Preparation of Biopolymer Aerogels Using Green Solvents
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Preparation of Biopolymer Aerogels Using Green Solvents

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Flexible organofunctional aerogels.

C R Ehgartner1, S Grandl, A Feinle

  • 1Materials Chemistry, Paris Lodron University Salzburg, Jakob-Haringer Street 2A, 5020 Salzburg, Austria. nicola.huesing@sbg.ac.at.

Dalton Transactions (Cambridge, England : 2003)
|March 30, 2017
PubMed
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Researchers developed flexible, functional silica aerogels using methyltrimethoxysilane (MTMS) and co-condensed organofunctional alkoxysilanes. These novel aerogels exhibit enhanced mechanical strength, elastic recovery, and hydrophobicity, opening new material possibilities.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Polymer Chemistry

Background:

  • Conventional silica aerogels suffer from brittleness and poor mechanical properties.
  • Incorporating organic components can improve aerogel flexibility and functionality.
  • Methyltrimethoxysilane (MTMS) is a key precursor for silica-based materials.

Purpose of the Study:

  • To synthesize flexible, functional silica aerogels with improved mechanical properties.
  • To investigate the effect of co-condensing MTMS with various organofunctional alkoxysilanes.
  • To demonstrate the accessibility and reactivity of functional groups within the aerogel network.

Main Methods:

  • Sol-gel process using MTMS and RSi(OMe)3 (R = vinyl, chloropropyl, etc.).
  • Systematic investigation of sol-gel parameters (e.g., MTMS/RSi(OMe)3 ratio).

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Aesthetically Enhanced Silica Aerogel Via Incorporation of Laser Etching and Dyes
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Last Updated: Mar 5, 2026

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  • Characterization using FTIR-ATR, Raman spectroscopy, and uniaxial compression tests.
  • Supercritical CO2 drying for aerogel fabrication.

    • Main Results:

    • Flexible aerogels with elastic recovery up to 60% were achieved.
    • Successful incorporation of functional organic groups confirmed by spectroscopy.
    • Surfactants were employed to overcome phase separation issues with sterically demanding groups.
    • Demonstrated accessibility of functional groups through subsequent chemical reactions (e.g., azide formation and click chemistry).

    Conclusions:

    • Co-condensation of MTMS with organofunctional alkoxysilanes yields flexible, robust silica aerogels.
    • The developed functional aerogels possess tunable properties and reactive sites for further modification.
    • These materials show potential for applications requiring mechanically stable and chemically adaptable scaffolds.