Formation of polycyanoacrylate-silica nanocomposites by chemical vapor deposition of cyanoacrylates on aerogels

Dylan J. Boday, Kimberly A. Defriend, Kennard V. Wilson, David Coder, Douglas A. Loy

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

The Chemical Vapor Decomposition (CVD) reinforcement of aerogels using cyanoacrylate to create a silica-polycynanoacrylate nanocomposites was presented. Cylindrical silica aerogels were prepared by standard base-catalyzed sol-gel techniques followed by supercritical carbon dioxide drying. The results indicate that the deposition of cyanoacrylate causes the aerogels to change from transparent to opaque white. Silica aerogel monoliths analyzed using a three-point compression analysis found that the aerogels have rupture strengths consistent with aerogels of a density of approximately 0.077. The treated aerogels result in an increase in surface hydrophobicity as the CVD modified aerogels float on water without wetting and cracking. The results also show that decreasing the number of initiating members on the aerogel surface results in strong nanoparticles based on high molecular weight polycyanoacrylates.

Original languageEnglish (US)
Pages (from-to)2845-2847
Number of pages3
JournalChemistry of Materials
Volume20
Issue number9
DOIs
StatePublished - May 13 2008

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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