Hydrocarbon-bridged polysiloxane and polysilsesquioxane network materials

Gregory M. Jamison, Douglas A. Loy, Roger A. Assink, Kenneth J. Shea

Research output: Contribution to journalConference article

7 Scopus citations

Abstract

Hexylene- and phenylene-bridged polymethylsiloxane xerogels X-2 and X-4, respectively, were prepared by the sol-gel hydrolysis and condensation of 1,6-bis(diethoxymethylsilyl)hexane 1 and 1,4-bis(diethoxymethysilyl)benzene 2 under acidic and basic conditions. These polymerizations afforded network polymers in the form of wet gels within several hours. The gels were processed to afford xerogels whose characteristics (determined by solid state 13C and 29Si CP MAS NMR spectroscopy and nitrogen sorption porosimetry) were compared and contrasted with those of their analogous polysilsesquioxanes. 29Si CP MAS NMR indicates a high degree of hydrolysis and polycondensation; porosimetry measurements reveal that the materials have significant surface areas, save for the acid-catalyzed hexylene gels X-2.

Original languageEnglish (US)
Pages (from-to)487-491
Number of pages5
JournalMaterials Research Society Symposium - Proceedings
Volume346
StatePublished - Dec 1 1994
Externally publishedYes
EventProceedings of the 1994 MRS Spring Meeting - San Francisco, CA, USA
Duration: Apr 4 1994Apr 8 1994

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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