Porosity in Polysilsesquioxane Xerolgels Metadata

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  • Main Title Porosity in Polysilsesquioxane Xerolgels


  • Author: Baugher, B.M.
    Creator Type: Personal
  • Author: Loy, D.A.
    Creator Type: Personal
  • Author: Rahimian, K.
    Creator Type: Personal


  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: US Department of Energy (United States)


  • Name: Sandia National Laboratories
    Place of Publication: Albuquerque, New Mexico
    Additional Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)


  • Creation: 1999-08-17


  • English


  • Content Description: Polymerization of organotrialkoxysilanes is a convenient method for introducing organic functionality into hybrid organic-inorganic materials. However, not much is known about the effects of the organic substituent on the porosity of the resulting xerogels. In this study, we prepared a series of polysilsesquioxane xerogels from organotrialkoxysilanes, RSi(OR{sup 1}){sub 3}, with different organic groups (R = H, Me, Et dodecyl, hexadecyl, octadecyl, vinyl, chloromethyl, (p-chloromethyl) phenyl, cyanoethyl). Polymerizations of the monomers were carried out under a variety of conditions, varying monomer concentration, type of catalyst, and alkoxide substituent. The effect of the organic substituent on the sol-gel process was often dramatic. In many cases, gels were formed only at very high monomer concentration and/or with only one type of catalyst. All of the gels were processed as xerogels and characterized by scanning electron microscopy and nitrogen sorption porosimetry to evaluate their pore structure.
  • Physical Description: 6 p.


  • Keyword: Gels
  • STI Subject Categories: 36 Materials Science
  • Keyword: Scanning Electron Microscopy
  • Keyword: Pore Structure
  • Keyword: Polymerization
  • Keyword: Porosity
  • Keyword: Sol-Gel Process
  • Keyword: Silanes
  • Keyword: Organic Silicon Compounds


  • Conference: MRS Proceedings, San Francisco, CA (US), 04/05/1999--04/09/1999


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article


  • Text


  • Report No.: SAND99-2751C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 14104
  • Archival Resource Key: ark:/67531/metadc622137


  • Display Note: OSTI as DE00014104
  • Display Note: Medium: P; Size: 6 pages