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Title: Method for chemical surface modification of fumed silica particles

Abstract

Dehydroxylated, silica-containing, glass surfaces are known to be at least partially terminated by strained siloxane rings. According to the invention, a surface of this kind is exposed to a selected silane compound or mixture of silane compounds under reaction-promoting conditions. The ensuing reaction results in opening of the strained siloxane rings, and termination of surface atoms by chemical species, such as organic or organosilicon species, having desirable properties. These species can be chosen to provide qualities such as hydrophobicity, or improved coupling to a polymeric coating.

Inventors:
 [1];  [2];  [1]
  1. Albuquerque, NM
  2. Cedar Crest, NM
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
872281
Patent Number(s):
5902636
Assignee:
Lucent Technologies Inc. (Murray Hill, NJ)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
DOE Contract Number:  
FI04-88AL54100
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; chemical; surface; modification; fumed; silica; particles; dehydroxylated; silica-containing; glass; surfaces; partially; terminated; strained; siloxane; rings; according; exposed; selected; silane; compound; mixture; compounds; reaction-promoting; conditions; ensuing; reaction; results; termination; atoms; species; organic; organosilicon; desirable; properties; chosen; provide; qualities; hydrophobicity; improved; coupling; polymeric; coating; improved coupling; partially terminated; organosilicon species; silane compound; silane compounds; selected silane; polymeric coating; provide qualities; reaction results; surface atoms; glass surface; surface modification; chemical species; silica particles; chemical specie; desirable properties; glass surfaces; siloxane rings; strained siloxane; reaction-promoting conditions; ensuing reaction; chemical surface; fumed silica; /427/423/

Citation Formats

Grabbe, Alexis, Michalske, Terry Arthur, and Smith, William Larry. Method for chemical surface modification of fumed silica particles. United States: N. p., 1999. Web.
Grabbe, Alexis, Michalske, Terry Arthur, & Smith, William Larry. Method for chemical surface modification of fumed silica particles. United States.
Grabbe, Alexis, Michalske, Terry Arthur, and Smith, William Larry. Fri . "Method for chemical surface modification of fumed silica particles". United States. https://www.osti.gov/servlets/purl/872281.
@article{osti_872281,
title = {Method for chemical surface modification of fumed silica particles},
author = {Grabbe, Alexis and Michalske, Terry Arthur and Smith, William Larry},
abstractNote = {Dehydroxylated, silica-containing, glass surfaces are known to be at least partially terminated by strained siloxane rings. According to the invention, a surface of this kind is exposed to a selected silane compound or mixture of silane compounds under reaction-promoting conditions. The ensuing reaction results in opening of the strained siloxane rings, and termination of surface atoms by chemical species, such as organic or organosilicon species, having desirable properties. These species can be chosen to provide qualities such as hydrophobicity, or improved coupling to a polymeric coating.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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