TRIBLOCK-COPOLYMER-DIRECTED SYNTHESES OF LARGE-PORE MESOPOROUS SILICAFIBERS

Authors
YANG PD ZHAO DY CHMELKA BF STUCKY GD
Citation
Pd. Yang et al., TRIBLOCK-COPOLYMER-DIRECTED SYNTHESES OF LARGE-PORE MESOPOROUS SILICAFIBERS, Chemistry of materials, 10(8), 1998, pp. 2033
Citations number
26
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Chemistry of materials → ACNP
ISSN journal
08974756
Volume
10
Issue
8
Year of publication
1998
Database
ISI
SICI code
0897-4756(1998)10:8<2033:TSOLMS>2.0.ZU;2-L
Abstract
Mesoporous silica fibers with accessible, highly ordered large periodi c pores are directly drawn from a highly viscous surfactant/silicate s olution. Poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) triblock copolymers are used as the structure-directing agents under acidic conditions during the syntheses. These fibers have unifor m exterior diameters of submicron to several hundred micron and no app arent limit on aspect ratios. They are made up of either supercage arr ays or 2-dimensional channel arrays with pore sizes as large as 63 Ang strom.