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Seol YJ, Kim KH, Kang YM, Kim IA, Rhee SH. Bioactivity, pre-osteoblastic cell responses, and osteoconductivity evaluations of the electrospun non-woven SiO2-CaO gel fabrics. J Biomed Mater Res B Appl Biomater 2009; 90:679-87. [DOI: 10.1002/jbm.b.31334] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Abstract
Poly(lactic-co-glycolic)acid and silica gel fibers mixed non-woven fabric was made by
electro-spinning method for the potential application as a bone grafting material. The silica gel, the
source material for electro-spinning, was prepared by the hydrolysis of tetraethyl orthosilicate in the
presence of calcium salt, water, hydrochloric acid and ethanol. Poly(lactic-co-glycolic)acid solution
was prepared by dissolving it in the hexafluoroisopropanol. Then, they were transferred to two
separate syringes which were connected to the high voltage supply generating a high electric field
between the spinneret and the ground collecting drum. The silica gel containing calcium and
poly(lactic-co-glycolic)acid solution were spun together under the electric field of 2 ㎸/㎝. The
FE-SEM observations showed that the silica gel and poly(lactic-co-glycolic)acid fibers were mixed
together completely and its handling property was much improved compared to that of the non-woven
silica gel fabric. After soaking in the SBF for 1 week, low crystalline apatite crystals were also
observed to occur on the silica fiber surfaces first and then they were also observed to occur on the
poly(lactic-co-glycolic)acid fiber surfaces. From the results, it can be concluded that the
poly(lactic-co-glycolic)acid and silica gel fibers mixed non-woven fabric made by electro-spinning
method has a bioactivity. It means it has a potential to be used as a bone grafting material because of
its apatite-forming ability, high surface area to volume ratio and high porosity.
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