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Citation: SHEN Xin-Zhang, JIN Ming-Hui. Surface Modification of Nano-SiO₂ by in-situ Polymerization of Methacrylic Acid[J]. Chinese Journal of Applied Chemistry, ;2003, 20(10): 1003-1005. shu

Surface Modification of Nano-SiO₂ by in-situ Polymerization of Methacrylic Acid

SHEN Xin-Zhang ,
JIN Ming-Hui ^,

1.
Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074

Corresponding author: JIN Ming-Hui,
Received Date: 22 January 2003
Available Online: 21 April 2003
Fund Project: 华中科技大学研究生科技创新基金资助项目(YCJ02008) (YCJ02008)

Silane coupling agent was used to introduce polymerizable groups onto the surface of nano-SiO₂ particles. Then in-situ polymerization was carried out between the functionalized particles and methacrylic acid monmer to accomplish the surface modification of nano-SiO₂. Analysis of FTIR、TEM and TGA results show that methacrylic acid is grafted onto the surface of functionalized particles and the modified particles were stable. Contact angle measurement demonstrated that the modified particles were wetted by toluene completely and the contact angle with water was 105℃, indicating that the hydrophilic surface has been transfered to hydrophobic via the modification.
- nano-SiO₂,
- surface modification,
- methacrylic acid,
- silane coupling agent
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Surface Modification of Nano-SiO₂ by in-situ Polymerization of Methacrylic Acid