| GUO Qing-bing,TAN Yun-hua,CHEN Jiang-hua,LI Cui-jin,XIAO Nai-yu.Grafting Modification and Structure Characterization of Nanosilica[J],39(3):6-9 |
| Grafting Modification and Structure Characterization of Nanosilica |
| Received:February 26, 2010 Revised:June 10, 2010 |
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| DOI： |
| KeyWord:nano-SiO2particle grafting modification structure characterization |
| Author | Institution |
| GUO Qing-bing |
Zhongkai University of Agriculture and Engineering, Guangzhou |
| TAN Yun-hua |
Foshan Environmental Monitoring Center, Foshan , China |
| CHEN Jiang-hua |
Guangdong Institute of Safety Science and Technology, Guangzhou , China |
| LI Cui-jin |
Zhongkai University of Agriculture and Engineering, Guangzhou |
| XIAO Nai-yu |
Zhongkai University of Agriculture and Engineering, Guangzhou |
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| Abstract: |
| In order to improve the interfacial effort between nano-SiO2and epoxy and to promote the dispersivity of nano-SiO2in it, the nano-SiO2was grafted with polystyrenemaleic anhydride through chemical grafting modification. Infrared spectra and nuclear magnetic resonance were used to characterize the structure of grafted nano-SiO2,while transmissionelectron microscopic and dynamic light scattering were used to study the dispersivity of grafted and un-grafted nano-SiO2. The experimental results show that the grafting chainswere grafted on the surface of nano-SiO2through chemical bonds,which leads to the improvement of its dispersivity. The optimum reaction conditions were gained by optimizing the reaction factors such asinitiator concentration, monomer concentration, reaction time and initiator lead time. |
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