| 聚乙二醇在Al2O3/水界面吸附行为的ESR研究 |
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| 引用本文： | 李国希,邓姝皓,夏笑虹,旷亚非,黄树坤. 聚乙二醇在Al2O3/水界面吸附行为的ESR研究[J]. 波谱学杂志, 2000, 17(6): 495-499 |
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| 作者姓名： | 李国希 邓姝皓 夏笑虹 旷亚非 黄树坤 |
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| 作者单位： | 湖南大学化学化工学院, 长沙 410082 |
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| 摘 要： | 采用电子自旋共振技术结合自旋标记研究了聚乙二醇在Al2O3/水界面的分子构型和运动行为.结果表明,聚乙二醇在Al2O3上的吸附等温线呈S型,吸附量随聚乙二醇分子量增加而减小,聚乙二醇在Al2O3表面是多点吸附,分子中的大部分链节平躺在Al2O3表面、少部分链节伸向溶液。
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| 关 键 词： | 吸附 ESR 聚乙二醇 |
| 收稿时间： | 2000-10-27 |
THE ESR INVESTIGATION ON ABSORPTION BEHAVIOUR OF POLYETHYLENE GLYCOL AT Al2O3/WATER INTERFACE |
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| LI Guo-xi,DENG Shu-hao,XIA Xiao-hong,KUANG Ya-fei,HUANG Shu-kun. THE ESR INVESTIGATION ON ABSORPTION BEHAVIOUR OF POLYETHYLENE GLYCOL AT Al2O3/WATER INTERFACE[J]. Chinese Journal of Magnetic Resonance, 2000, 17(6): 495-499 |
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| Authors: | LI Guo-xi DENG Shu-hao XIA Xiao-hong KUANG Ya-fei HUANG Shu-kun |
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| Affiliation: | College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082 |
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| Abstract: | The molecular configuration and motion behaviour of polyethylene glycol (PEG) at Al2O3/water interface were investigated by using the electron spin resonance (ESR) technique, coupled with spin label technique. The adsorption isotherms of PEG on the Al2O3 surface were of S type and the amount of adsorption decreased with the increas of molecular weight. The adsorption of PEG on the Al2O3 surface was of the multipoint adsorption, where most segments of PEG were bound to the surface and a few residual segments were dangling in the solution. |
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| Keywords: | ESR |
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