International Journal of Industrial Entomology and Biomaterials

Korean Society of Sericultural Science (한국잠사학회)
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Synthesis of Silica using Silk Sericin without Hydrolysis of Tetraethyl Orthosilicate

  • Lee, Ji Young (National Instrumentation Center for Environmental Management, Seoul National University) ;
  • Lee, Ki Hoon (Department of Biosystems & Biomaterials Science and Engineering, Seoul National University)
  • Received : 2013.12.01
  • Accepted : 2013.12.15
  • Published : 2013.12.31
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Abstract

In this study, the effect of sericin on synthesis of the silica was investigated. Using the mixture of sericin solution and tetraethyl orthosilicate (TEOS), it was confirmed that silica could be synthesized in the presence of sericin, which was verified by thermal gravimetric analysis (TGA), Fourier-transformed infrared spectrometer (FT-IR) and nuclear magnetic resonance spectrometer (NMR) analysis. The TGA and FT-IR data revealed that silica-sericin complex was formed as a final product. Based on the TGA result, the content of silica and sericin in the complex would be 87 and 13%, respectively. The degree of silica condensation was higher than the natural biosilica. It could be concluded that sericin can induce the synthesis of silica directly from TEOS, which is similar to silicatein from marine sponges.

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References

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