Molecular dynamics simulation of binary betaine and anionic surfactant mixtures at decane - Water interface
文献类型：期刊论文
| 作者 | Cai, Hong-Yan1,2; Zhang, Yi1,2; Liu, Zi-Yu3; Li, Jian-Guo1,2; Gong, Qing-Tao3; Liao, Qi4; Zhang, Lu3; Zhao, Sui3 |
| 刊名 | JOURNAL OF MOLECULAR LIQUIDS
 |
| 出版日期 | 2018-09-15 |
| 卷号 | 266页码:82-89 |
| 关键词 | Betaine Anionic Surfactant Molecular Dynamics Simulation Interface |
| ISSN号 | 0167-7322 |
| DOI | 10.1016/j.molliq.2018.06.047 |
| 英文摘要 | The interfacial properties of binary betaine and anionic surfactant mixtures at decane-water interface have been studied via molecular dynamics simulations. Two betaines chosen are alkyl sulfobetaine (ASB) and alkylbenzene sulfobetaine (BSB), while three anionic surfactants chosen are sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate (SDBS) and sodium octadecyl sulfonate (SOS), respectively. The synergistic influences between betaines and anionic surfactants are explored using mass density profile, interfacial thickness, atomic spacing and oblique angle. Hydrophilic size of betaine has been calculated through atomic spacing and oblique angle. The calculated value of hydrophilic size is about 81 A(2), which is approximately equal to experimental saturated adsorption area and simulated critical micelle area. Two anionic surfactant layers exist, a small amount of molecules are paralleled with ASB to generate competitive adsorption. More anionic surfactants are located in the cracks of ASB hydrophobic chains to form mixed adsorption. Mixed adsorption dominates surfactant adsorbent process for betaine/anionic surfactant mixtures. SDBS distribution range is exactly same as ASB range at the oil phase, which implies the consistent of hydrophobic chain lengths between above two surfactants. Interfacial compactness can be quantitative calculated by comparing betaine number and anionic surfactant number at mixed adsorbent layer. Simulated interfacial compactness perfectly corresponds with experimental interfacial tension, which may stand for the discovery about reliable evaluation criteria of comparing different betaine mixtures. Both surfactant hydrophilic-lipophilic balance and consistency of hydrophilic-hydrophobic structure can affect interfacial properties. The mechanism about surfactant mixed adsorption is also perfected at a molecular level, which is important for the enhanced oil recovery processes. (C) 2018 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000442976500010 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/42279]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, Zi-Yu; Liao, Qi |
| 作者单位 | 1.State Key Lab Enhanced Oil Recovery, 20 Xue Yuan Rd, Beijing 100083, Peoples R China 2.Petro China Res Inst Petr Explorat & Dev, 20 Xue Yuan Rd, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Hong-Yan,Zhang, Yi,Liu, Zi-Yu,et al. Molecular dynamics simulation of binary betaine and anionic surfactant mixtures at decane - Water interface[J]. JOURNAL OF MOLECULAR LIQUIDS,2018,266:82-89. |
| APA | Cai, Hong-Yan.,Zhang, Yi.,Liu, Zi-Yu.,Li, Jian-Guo.,Gong, Qing-Tao.,...&Zhao, Sui.(2018).Molecular dynamics simulation of binary betaine and anionic surfactant mixtures at decane - Water interface.JOURNAL OF MOLECULAR LIQUIDS,266,82-89. |
| MLA | Cai, Hong-Yan,et al."Molecular dynamics simulation of binary betaine and anionic surfactant mixtures at decane - Water interface".JOURNAL OF MOLECULAR LIQUIDS 266(2018):82-89. |
入库方式： OAI收割
来源：化学研究所
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