| A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA |
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| 作者姓名： | Yong-liang Zhu Bin Wang Jian Yu Zhao-xia Guo |
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| 作者单位： | Institute of Polymer Science and Engineering, Department of Chemical Engineering, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China |
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| 摘 要： | PEG （Polyethylene Glycol）-grafted nano-titania has been obtained in a one-step procedure using hexamethylene diisocyanate as the coupling agent and dibutyltin dilaurate as the catalyst in toluene at 80℃ and characterized qualitatively by FTIR and quantitatively by elemental analysis and thermogravimetric analysis. A comparison of nano-titania with two other commonly used inorganic nanoparticles, nano-silica and nano-alumina, is made, revealing that reactivity order is nano- silica 〉 nano-alumina 〉 nano-titania in view of PEG grafting. Possible mechanism of PEG grafting is also discussed.
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| 关 键 词： | PEG 接枝聚合 二氧化钛 纳米复合材料 表面改性 |
| 收稿时间： | 2006-06-06 |
| 修稿时间： | 2006-07-19 |
A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA |
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| Yong-liang Zhu Bin Wang Jian Yu Zhao-xia Guo.A ONE-STEP SURFACE MODIFICATION PROCEDURE TO PEG-GRAFTED NANO-TITANIA[J].Chinese Journal of Polymer Science,2007,0(3):291-296. |
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| Authors: | Yong-liang Zhu Bin Wang Jian Yu Zhao-xia Guo |
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| Institution: | Institute of Polymer Science and Engineering, Department of Chemical Engineering, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | PEG (Polyethylene Glycol)-grafted nano-titania has been obtained in a one-step procedure using hexamethylene diisocyanate as the coupling agent and dibutyltin dilaurate as the catalyst in toluene at 80℃ and characterized qualitatively by FTIR and quantitatively by elemental analysis and thermogravimetric analysis. A comparison of nano-titania with two other commonly used inorganic nanoparticles, nano-silica and nano-alumina, is made, revealing that reactivity order is nanosilica ＞ nano-alumina ＞ nano-titania in view of PEG grafting. Possible mechanism of PEG grafting is also discussed. |
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| Keywords: | Nano-titania PEG Hexamethylene diisocyanate Surface modification |
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