Synthesis of Silica using Silk Sericin without Hydrolysis of Tetraethyl Orthosilicate
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In this study, the effect of sericin on synthesis of the silica was investigated. Using the mixtureof sericin solution and tetraethyl orthosilicate (TEOS), it was confirmed that silica could besynthesized in the presence of sericin, which was verified by thermal gravimetric analysis(TGA), Fourier-transformed infrared spectrometer (FT-IR) and nuclear magnetic resonancespectrometer (NMR) analysis. The TGA and FT-IR data revealed that silica-sericin complexwas formed as a final product. Based on the TGA result, the content of silica and sericin in thecomplex would be 87 and 13%, respectively. The degree of silica condensation was higherthan the natural biosilica. It could be concluded that sericin can induce the synthesis of silicadirectly from TEOS, which is similar to silicatein from marine sponges.
Abstract
In this study, the effect of sericin on synthesis of the silica was investigated. Using the mixtureof sericin solution and tetraethyl orthosilicate (TEOS), it was confirmed that silica could besynthesized in the presence of sericin, which was verified by thermal gravimetric analysis(TGA), Fourier-transformed infrared spectrometer (FT-IR) and nuclear magnetic resonancespectrometer (NMR) analysis. The TGA and FT-IR data revealed that silica-sericin complexwas formed as a final product. Based on the TGA result, the content of silica and sericin in thecomplex would be 87 and 13%, respectively. The degree of silica condensation was higherthan the natural biosilica. It could be concluded that sericin can induce the synthesis of silicadirectly from TEOS, which is similar to silicatein from marine sponges.
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