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琥珀酸二(2-乙基己基)酯磺酸钠与聚合物表面活性剂形成的混合反胶团研究
Study on the Mixed Reverse Micellar Aggregates Formed from AOT and Polymer Surfactants
【摘要】 研究了琥珀酸二 (2 -乙基己基 )酯磺酸钠 (AOT)与聚合物表面活性剂混合后在非极性溶剂中的聚集行为 .结果表明 ,随聚合物与 AOT摩尔比的增大 ,体系的 CMC逐渐增大 ,但该摩尔比大于 1∶ 1时 ,用水增溶法不能测出 CMC;研究了荧光探针 Ru(bpy) 2 + 3在该混合反胶团中的荧光行为 .随有机相含水量 W0 增大 ,对微极性敏感的荧光探针的最大发射波长 λmax逐渐红移 ,荧光强度 F则逐渐减弱 .随聚合物含量增大 ,混合体系表面活性剂极性基的水合过程在较小 W0 下完成
【Abstract】 The aggregation behavior of AOT(bis(2 ethylhexyl) sodium sulfosuccinate) mixed with polymer surfactants GP330(glycerin polyoxypropyl ether) or L61(poly(PEO b PPO) in nonpolar solvents and the luminescence behavior of ruthenium tris(2,2 bipyridine) in the mixed reverse micelles have been studied. The results indicated that CMC of the system increased with increase in mole ratio of the polymer to AOT, but it couldnt be measured by the water solubilization method when the mole ratio increased to 1∶1, and that the fluorescence intensity of the probe decreased with increase in water content in the reverse micelles and the emission λ max shifted to longer wavelengths. The results also indicated that increase in content of polymer surfactants could cause the hydration to be completed in lower W 0(mole ratio of H 2O to surfactant in organic phase) value.
【Key words】 AOT; polymer surfactant; mixed reverse micelle; aggregation behavior; fluore-scence probe;
- 【文献出处】 应用化学 ,CHINESE JOURNAL OF APPLIED CHEMISTRY , 编辑部邮箱 ,2000年02期
- 【分类号】O642
- 【被引频次】8
- 【下载频次】190