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A new surface modification method to improve the dispersity of nano-silica in organic solvents

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Abstract

Different surface modification methods to improve the dispersity of nano-silica in organic solvents by γ-methacryloxypropyltrimethoxy silane (MOPTMS) anhydrous alcohol solution were investigated. The possible principles of these methods improving the dispersity of nano-silica in organic solvents were proposed. The optimum modification method was that nano-silica powders were chemically modified by γ-methacryloxypropyltrimethoxy silane anhydrous alcohol solution and γ-methacryloxypropyltrimethoxy silane anhydrous alcohol solution was dropwise added at 3 mL/min. The transparency of the optimum modified nano-silica powder anhydrous alcohol solution (0.1 wt. %) was 85.9%. The 29Si cross polarization and magic-angle spinning nuclear magnetic resonance spectra suggested that nano-silica was chemically modified by γ-methacryloxypropyltrimethoxy silane anhydrous alcohol solution. The transmission electron microscopy images suggested that the optimum modified nano-silica was well dispersed. The dispersity of nano-silica in anhydrous alcohol, CH2Cl2, CCl4, cyclohexane, and liquid paraffin increased from 0, 0, 0, 0, and 0.1 to 9.4, 9.6, 9.8, 9.8, and 10.0 g/100 mL after surface modification.

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Acknowledgments

This study was financially supported by Earmarked Fund for Modern Agro-industry Technology Research System, Innovation Project of Education Ministry (No. IRT0627), and Food Processing Technology Research (No. 2006BAD05A10).

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Authors and Affiliations

  1. The State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Rood, 214122, Wuxi, China

    Yulin Li

  2. The School of Food Science and Technology, Jiangnan University, 1800 Lihu Rood, 214122, Wuxi, China

    Zhengxing Chen & Xiaoxuan Li

  3. The Key Laboratory of Industrial Biotechnology of Minister of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Rood, 214122, Wuxi, People’s Republic of China

    Huawei Zeng

Authors
  1. Yulin Li
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  2. Zhengxing Chen
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  3. Xiaoxuan Li
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  4. Huawei Zeng
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Corresponding authors

Correspondence to Yulin Li or Zhengxing Chen.

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Li, Y., Chen, Z., Li, X. et al. A new surface modification method to improve the dispersity of nano-silica in organic solvents. J Sol-Gel Sci Technol 58, 290–295 (2011). https://doi.org/10.1007/s10971-010-2389-0

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  • DOI: https://doi.org/10.1007/s10971-010-2389-0

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