| 阴-非离子表面活性剂复合改性水滑石的表面性质研究 |
| Surface Characterization for Anionic-Nonionic Surfactant Modified Layered Double Hydroxides |
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| 摘要: 采用十二烷基苯磺酸钠（SDBS）、吐温-80（Tween-80）及两种表面活性剂复合改性镁铝水滑石，得到SDBS-LDHs，Tween-LDHs及SDBS/Tween-LDHs3种改性水滑石。利用反相气相色谱法（IGC）对样品进行表面性质的研究，定量计算了表面吸附自由能（ΔG0）和表面能色散组分（γsd）。结果表明，改性材料的ΔG0与γsd值均比未处理的镁铝水滑石小，其中阴-非离子表面活性剂复合改性后的水滑石的ΔG0与γsd值最小，说明阴-非离子表面活性剂复合改性水滑石较单一改性水滑石更有利于提高材料的稳定性。此外，各类水滑石的γsd值均随着温度的升高而减小，因此，在制备聚合物/水滑石类材料时，可以利用提高温度来改善其与聚合物的相容性。 |
| 关键词: 水滑石 表面活性剂 反相气相色谱法 复合改性 |
| 基金项目: 国家自然科学基金资助项目（No.）。 |
| Abstract: The surface modification of magnesium-aluminum hydrotalcites was made by sodium dodecyl benzene sulfonate (SDBS), Tween-80 and anionic-nonionic surfactant. Inverse gas chromatography (IGC) was used to investigate the surface properties of the MgAl-LDHs, SDBS-LDHs, Tween-LDHs and SDBS/Tween-LDHs. The surface free energy (ΔG0) and the dispersive component of the surface energy (γsd) were estimated. The results show that the ΔG0 and γsd of the modified LDHs are lower than that of MgAl-LDHs, ΔG0 and γsd of the SDBS/Tween-LDHs are the lowest. This indicates that the chemical stability of SDBS/Tween-LDHs is better than that of other modified LDHs. In addition, the value of γsd decreases with the increasing of temperature, so the compatibility with polymer can be improved by increasing the temperature in the preparation of polymer/hydrotalcite materials. |
| Keywords: hydrotalcite surfactant inverse gas chromatography coumpounding modification |
| 投稿时间：2013-11-15 修订日期：2014-01-08 |
| 摘要点击次数: 2061 |
| 全文下载次数: 2315 |
| 徐金芳,施炜,倪哲明,孙志茵,钱萍萍.阴-非离子表面活性剂复合改性水滑石的表面性质研究[J].无机化学学报,2014,30(5):977-983. |
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