Dynamic surface tensions of fluorous surfactant solutions
文献类型：期刊论文
| 作者 | Gao, YA; Hou, WG; Wang, ZN; Li, GZ; Han, BX; Zhang, GY; Lu, FF |
| 刊名 | CHINESE JOURNAL OF CHEMISTRY
 |
| 出版日期 | 2005-04-01 |
| 卷号 | 23期号:4页码:362-366 |
| 关键词 | Dynamic Surface Tension Adsorption Mechanism Fluorous Surfactant |
| ISSN号 | 1001-604X |
| 英文摘要 | Dynamic surface properties of aqueous solutions of cationic fluorous surfactant CF3CF2CF2O(CF(CF3)CF2O)(2)CF(CF3)CONH(CH2)(3)N+(C2H5)(2)CH3I (abbrev. FC-4) were reported. The critical micelle: concentration (cmc) (3.6 X 10(-5) mol/L) and equilibrium surface tensions gamma(eq) were measured by Kruss K12 tension apparatus. Dynamic surface tension gamma(t) was measured in the range of 15 ms to 200 s using the MBP tensiometer. The surface excess Gamma, as a function of concentration, was obtained from equilibrium tensiometry using the Gibbs equation. Data from these experiments were combined to analyze the gamma(t) decays according to the asymptotic Ward and Tordai equation. The results show that at the initial adsorption stage, the dynamic surface tension data were all consistent with this diffusion-controlled mechanism, and at the end of the adsorption process, there were some evidences for an adsorption barrier, suggesting a mixed diffusion-controlled adsorption mechanism. Using measured quantities, the barrier strength was estimated as between 25 and 35 kJ/mol at 25 degrees C. The surface pressure plays an important role in contributing to the barrier. |
| 语种 | 英语 |
| WOS记录号 | WOS:000227899000002 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/55901]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Gao, YA |
| 作者单位 | 1.Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China 3.China Res Inst Daily Chem Ind, Taiyuan 030001, Shanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, YA,Hou, WG,Wang, ZN,et al. Dynamic surface tensions of fluorous surfactant solutions[J]. CHINESE JOURNAL OF CHEMISTRY,2005,23(4):362-366. |
| APA | Gao, YA.,Hou, WG.,Wang, ZN.,Li, GZ.,Han, BX.,...&Lu, FF.(2005).Dynamic surface tensions of fluorous surfactant solutions.CHINESE JOURNAL OF CHEMISTRY,23(4),362-366. |
| MLA | Gao, YA,et al."Dynamic surface tensions of fluorous surfactant solutions".CHINESE JOURNAL OF CHEMISTRY 23.4(2005):362-366. |
入库方式： OAI收割
来源：化学研究所
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