Nanostructured interpenetrated organic-inorganic aerogels with thermal superinsulating properties

Arnaud Demilecamps, Margot Alves, Arnaud Rigacci, Gudrun Reichenauer, Tatiana Budtova*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

16 Citations (Scopus)

Abstract

Organic-inorganic composite aerogels were synthesized via a facile one-step impregnation of a wet hydrophobic cellulose II matrix with polyethoxydisiloxane solution followed by in situ NH4OH-catalysed formation of a nanostructured mesoporous silica network. The silica phase was subsequently hydrophobised with hexamethyldisilazane. By tuning synthesis conditions, organic-inorganic composite aerogels with various morphology (from meso- to macroporous), specific surface area (from 200 to 850 m2/g) and hydrophilic-hydrophobic balance (from fully hydrophilic to highly hydrophobic) were prepared after supercritical CO2 drying. The obtained organic-inorganic aerogels are monolithic, resistant to humidity and thermally superinsulating with the thermal conductivity 0.021–0.022 W/(m·K) in room conditions.

Original languageEnglish
Pages (from-to)259-265
Number of pages7
JournalJournal of Non-Crystalline Solids
Volume452
DOIs
Publication statusPublished - 15 Nov 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • Aerogel
  • Cellulose
  • Composite
  • Interpenetrated network
  • Silica
  • Thermal conductivity

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