| 王浩,刚洪泽,杨世忠,叶汝强,牟伯中.化学通报,2014,77(9):872-877. |
| 表面活性素与三种长链烷基苯磺酸盐之间的相互作用 |
| Interaction Between Surfactin and Three Alkylbenzene Sulfonates with Long Hydrophobic Chain |
| 投稿时间：2014-01-15 修订日期：2014-02-05 |
| DOI： |
| 中文关键词: 协同作用 混合胶束 相互作用参数 微极性 各向异性 |
| 英文关键词:Synergism Mixed micelle Interaction parameter Micropolarity Anisotropy |
| 基金项目:国家自然科学基金（No. 21203063）以及中央高校基本科研业务费项目（No. WK1213003, WJ1214066） |
|
| 摘要点击次数: 3260 |
| 全文下载次数: 0 |
| 中文摘要: |
| 利用表明张力和荧光的方法研究了surfactin与三种长链烷基苯磺酸盐C16ABS、C17ABS和 C18ABS之间的相互作用。计算了混合体系吸附单层和混合胶束中分子间的相互作用参数(bs 和 bm)以及热力学性质。负的相互作用参数表明尽管表面活性剂均为负离子型,但是分子间相互作用表现为相互吸引。可能是由于烷基苯磺酸盐与surfactin在混合吸附单层和胶束中形成了一种既能减弱头基间静电排斥又能增强疏水链之间相互作用的空间结构。荧光结果显示混合表面活性剂能形成更紧密、体积更大的聚集体,并且在高烷基苯磺酸盐含量时可能存在大型的棒、层状胶束或囊泡。 |
| 英文摘要: |
| Interaction between surfactin and three alkyl benzene sulfonates, C16ABS, C17ABS, and C18ABS, at different molar ratios were studied by surface tension and fluorescence methods. Various parameters including interaction parameters (bs and bm) and thermodynamic properties have been determined. The interaction showing negative bs and bm values in the mixed interfacial monolayer and micelle is attractive despite that both components are permanently negatively charged. Such an unexpected attractive interaction might be attributed to the arrangement of alkyl benzene sulfonates and surfactin molecules into a configuration that reduces the electrostatic repulsion and promotes the hydrophobic interaction between the molecules. The results of fluorescence measurements indicate that more packed and larger aggregates are formed from mixed surfactants and the mixed system may be able to form rod-shaped and lamellar micelle or vesicle at high molar fraction of alkyl benzene sulfonates. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |