The silica sol was prepared by a sol-gel method using tetraethyl orthosilicate (TEOS) as the starting material. Effects of acetic acid, water, and solvents on the spinnability and morphologies of electrospun fibers were investigated. The morphologies of fibers were observed by field emission scanning electron microscope (FESEM). When the molar ratio of water/TEOS was 1～2, electrospun fibers were smooth and continual. When the ratio was 4, circular pellets were gained. When the molar ratio of HCl/TEOS was 0.01-0.10, fibers became utual cementation, and formed intercross network structure with HCl content icreased. By using THF, acetone or ethyl alcohol respectively as solvent, the sols were spinnable. With THF or acetone as solvent, the electrospun fibers had numerous beads, but with ethyl alcohol as solvent, the fibers were continual and long without any bead.
YANG Hua-Zhong
,
SHI Tie-Jun
,
ZHAI Lin-Feng
,
WANG Hua-Lin
,
CAO Kang-Li
. Electrostatic Spinnability of Silica Sol and Morphologies of Its Electrospun roduct[J]. Journal of Inorganic Materials, 2006
, 21(5)
: 1273
-1277
.
DOI: 10.3724/SP.J.1077.2006.01273
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