Porosity in hexylene-bridged polysilsesquioxanes. Effects of monomer concentration

Brigitta M. Baugher, Douglas A Loy, S. Prabakar, Roger A. Assink, Kenneth J. Shea, Henry Oviatt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Citations (Scopus)

Abstract

Hexylene-bridged polysilsesquioxanes can be prepared as mesoporous or non-porous xerogels simply by switching from basic to acidic polymerization conditions. In this study, we looked at the effect of monomer concentration on porosity of hexylene-bridged xerogels prepared under acidic and basic conditions. 1, 6-Hexylene-bridged polysilsesquioxanes were prepared by sol-gel polymerizations of 1, 6-bis(triethoxysilyl)hexane 1 with concentrations between 0.1 to 1.2 M in ethanol. Gelation times ranged from seconds for 1.2 M concentration to months for 0.2 M. The gels were processed into xerogels by an aqueous work-up and the dry gels characterized by scanning electron microscopy (SEM), solid state 13C and 29Si CP MAS NMR spectroscopy, and gas sorption porosimetry.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Pages253-259
Number of pages7
Volume371
StatePublished - 1995
Externally publishedYes
EventProceedings of the 1994 MRS Fall Meeting - Boston, MA, USA
Duration: Nov 28 1994Nov 30 1994

Other

OtherProceedings of the 1994 MRS Fall Meeting
CityBoston, MA, USA
Period11/28/9411/30/94

Fingerprint

Xerogels
Porosity
Monomers
Gels
Polymerization
Hexanes
Gelation
Hexane
Nuclear magnetic resonance spectroscopy
Sol-gels
Sorption
Ethanol
Gases
Scanning electron microscopy
polysilsesquioxane

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Baugher, B. M., Loy, D. A., Prabakar, S., Assink, R. A., Shea, K. J., & Oviatt, H. (1995). Porosity in hexylene-bridged polysilsesquioxanes. Effects of monomer concentration. In Materials Research Society Symposium - Proceedings (Vol. 371, pp. 253-259). Materials Research Society.

Porosity in hexylene-bridged polysilsesquioxanes. Effects of monomer concentration. / Baugher, Brigitta M.; Loy, Douglas A; Prabakar, S.; Assink, Roger A.; Shea, Kenneth J.; Oviatt, Henry.

Materials Research Society Symposium - Proceedings. Vol. 371 Materials Research Society, 1995. p. 253-259.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Baugher, BM, Loy, DA, Prabakar, S, Assink, RA, Shea, KJ & Oviatt, H 1995, Porosity in hexylene-bridged polysilsesquioxanes. Effects of monomer concentration. in Materials Research Society Symposium - Proceedings. vol. 371, Materials Research Society, pp. 253-259, Proceedings of the 1994 MRS Fall Meeting, Boston, MA, USA, 11/28/94.
Baugher BM, Loy DA, Prabakar S, Assink RA, Shea KJ, Oviatt H. Porosity in hexylene-bridged polysilsesquioxanes. Effects of monomer concentration. In Materials Research Society Symposium - Proceedings. Vol. 371. Materials Research Society. 1995. p. 253-259
Baugher, Brigitta M. ; Loy, Douglas A ; Prabakar, S. ; Assink, Roger A. ; Shea, Kenneth J. ; Oviatt, Henry. / Porosity in hexylene-bridged polysilsesquioxanes. Effects of monomer concentration. Materials Research Society Symposium - Proceedings. Vol. 371 Materials Research Society, 1995. pp. 253-259
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