When does a diblock copolymer probe the interfacial rheological effect?
文献类型：期刊论文
| 作者 | Yang, Jingfa; Zhao, Jiang |
| 刊名 | SCIENCE CHINA-CHEMISTRY
 |
| 出版日期 | 2016-10-01 |
| 卷号 | 59期号:10页码:1330-1334 |
| 关键词 | interfaces diffusion immiscible liquids single molecule fluorescence |
| 英文摘要 | Lateral diffusion of diblock copolymer residing on the interfaces between two immiscible liquids is investigated at single molecular level. Fluorescence correlation spectroscopy was used to study the diffusion of fluorescence-labeled diblock copolymer, polystyrene-b-polyisoprene, at the interface formed between two immiscible liquids. The interfaces are formed between N,N-dimethylformamide (DMF) and a few immiscible liquids, n-alkane and polyisoprene. Interfacial diffusion coefficient of the diblock copolymer probe is found to decrease monotonously with the increase of the molecular length of the interface constituting liquids. The decrease of diffusion coefficient follows the prediction by Einstein relation using the viscosity of the constituting liquids as the variables only for interfaces between DMF and very small n-alkanes. For interfaces formed between DMF and bigger alkanes and especially between DMF and polyisoprene, the diffusion coefficient is much higher than the calculated value, indicating that the probe molecule starts to probe the much less viscous interfacial region because the interfacial width gets larger, whose thickness is comparable to the molecule size of the liquids. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35670]  |
| 专题 | 化学研究所_高分子物理与化学实验室 |
| 作者单位 | Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Jingfa,Zhao, Jiang. When does a diblock copolymer probe the interfacial rheological effect?[J]. SCIENCE CHINA-CHEMISTRY,2016,59(10):1330-1334. |
| APA | Yang, Jingfa,&Zhao, Jiang.(2016).When does a diblock copolymer probe the interfacial rheological effect?.SCIENCE CHINA-CHEMISTRY,59(10),1330-1334. |
| MLA | Yang, Jingfa,et al."When does a diblock copolymer probe the interfacial rheological effect?".SCIENCE CHINA-CHEMISTRY 59.10(2016):1330-1334. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。