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Citation: QIAN Jia-Sheng, CHEN Xiao-Ming, HE Ping-Sheng. Preparation and Characterization of PMMA/nano-SiO₂ Nanocomposite[J]. Chinese Journal of Applied Chemistry, ;2003, 20(12): 1200-1203. shu

Preparation and Characterization of PMMA/nano-SiO₂ Nanocomposite

1.
a Department of Polymer Science and Engineering, University of Science & Technology of China, Hefei 230036;
2.
b School of Chemistry and Chemical Engineering, Anhui University, Hefei

Corresponding author: HE Ping-Sheng,
Received Date: 9 January 2003
Available Online: 30 July 2003
Fund Project: 安徽省教育厅重点自然基金资助(2002zd30) (2002zd30)

When nano-SiO₂ particles were treated with silane coupling agent(KH-570), the groups of -CH=CH₂ were grafted on the surface of nano-SiO₂ particles successfully. By using ultrasonic dispersing method, the nano-SiO₂ particles mixed with MMA and BPO were dissolved in solvents of ethyl acetate/toluene with the volume ratio of 1/1. PMMA/nano-SiO₂ nanocomposites were synthesized. The samples were characterized by DSC, TGA and Vis spcetroscopy. It was noted that the silica particles acted as crosslinking points in the PMMA matrix. The thermal stability and the glass transition temperature of the nanocomposites increased with the increasing of nano-SiO₂ amount. The transparences of PMMA/nano-SiO₂ nanocomposites, however, decreased with the increasing of nano-SiO₂ amount.
- silica oxide,
- polymethyl methocrylate,
- nanocomposite,
- solution polymerization
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Preparation and Characterization of PMMA/nano-SiO₂ Nanocomposite