NMR Study of Surfactant Micelle Shape Transformation with Concentration
文献类型：期刊论文
| 作者 | Lu Xing-Yu1,2; Jiang Yan1,2; Cui Xiao-Hong1,2; Mao Shi-Zhen1; Liu Mai-Li1; Du You-Ru1 |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2009-07-01 |
| 卷号 | 25期号:7页码:1357-1361 |
| 关键词 | Surfactant NMR Micelle shape transformation critical micelle concentration II |
| 通讯作者 | Mao, SZ (reprint author), Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China. |
| 英文摘要 | The micelle shape transformation of tert-octylpheny phenol polyethylene glycol ether (TX-100), sodium dodecyl benzene sulfonate (SDBS) and tetradecyl trimethyl ammonium bromide (TTAB) in heavy water solutions was studied by H-1 nuclear magnetic resonance (NMR) spectroscopy, including an NMR self-diffusion experiment. These experiments showed that the surfactants formed several shapes of micelles (spherical, ellipsoidal, and rodlike) at the respective concentrations which were far above their critical micelle concentration (cmc). At ambient temperature, normal pressure and when the concentration of the surfactant was above the cmc without other additives, spherical micelles were formed. At higher surfactant concentrations, H-1 NMR spectra and self-diffusion experiments showed that abrupt changes occurred in their chemical shifts (delta) and in their self-diffusion coefficients (D). This indicated that spherical micelles transformed into larger micelles. By careful examination of every proton resonance peak in the H-1 NMR spectra, we found that the protons near the head group experienced larger chemical shift changes than protons near the hydrophobic group. This suggests that the shape of surfactant micelles most likely transforms from spherical to ellipsoidal or rodlike. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | SODIUM DODECYL-SULFATE ; AQUEOUS-SOLUTION ; SECOND CMC ; GEMINI SURFACTANTS ; TRANSITION ; SYSTEMS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000268081000019 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/2196]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu Xing-Yu,Jiang Yan,Cui Xiao-Hong,et al. NMR Study of Surfactant Micelle Shape Transformation with Concentration[J]. ACTA PHYSICO-CHIMICA SINICA,2009,25(7):1357-1361. |
| APA | Lu Xing-Yu,Jiang Yan,Cui Xiao-Hong,Mao Shi-Zhen,Liu Mai-Li,&Du You-Ru.(2009).NMR Study of Surfactant Micelle Shape Transformation with Concentration.ACTA PHYSICO-CHIMICA SINICA,25(7),1357-1361. |
| MLA | Lu Xing-Yu,et al."NMR Study of Surfactant Micelle Shape Transformation with Concentration".ACTA PHYSICO-CHIMICA SINICA 25.7(2009):1357-1361. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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