中文摘要：

利用核磁共振化学位移变化，自旋-自旋弛豫和2D NOESY（two-dimensional nuclear Overhauser enhancement spectroscopy）研究了一系列新合成的双取代烷基苯磺酸盐的胶束化．结果表明，邻位取代的是正烷烃链，间位取代的是支烷烃链．而且，邻位取代的烷烃链越长，参与形成胶束疏水核表面层的亚甲基个数越多．因此。每个分子在饱和吸附的油水界面上的面积越大．间位取代的分支链在胶束疏水核中堆积得没有邻位取代的正烷烃链紧密．分支链越短，堆积得越不紧密．描述了胶束中分子的相对排列。

英文摘要：

Micellization of a series of newly synthesized diaikyl benzene sulfonates was studied using proton chemical shift changes, spin-lattice, and spin-spin relaxation NMR spectroscopy, and two-dimensional nuclear Overhauser enhancement spectroscopy （2D NOESY）. The o-substituted chains are normal aikyl chains with varying lengths, and the m-substituted ones are branched aikyl chains. The results showed that the longer the o-substituted normal alkyl chain, protons of more methylene groups participated in the formation of the rigid surface layer of the hydrophobic micellar core. Consequently, the larger was the area per molecule adsorbed on the interface between oil and water at saturation. The branched m-substituted aikyl chains of the diaikTl benzene sulfonates were less tightly packed than the o-substituted normai aikyl chains in the hydrophobic micellar cores. The shorter the m-substituted branched aikyl chains, the looser they were packed in the hydrophobic micellar core. The relative arrangement of the surfactant molecules in the micelles was elucidated.