Direct visualization of colloidal gelation under confinement
文献类型：期刊论文
| 作者 | Sarangapani, Prasad S.1; Yu, Yanghai1; Zhao, Jiang2; Zhu, Yingxi1 |
| 刊名 | PHYSICAL REVIEW E
 |
| 出版日期 | 2008-06-01 |
| 卷号 | 77期号:6 |
| ISSN号 | 1539-3755 |
| DOI | 10.1103/PhysRevE.77.061406 |
| 英文摘要 | The physical mechanism of colloidal gelation remains inadequately understood, particularly for intermediate to high volume fractions. Experiments to directly probe the complex evolution of structural and viscoelastic properties of gels have been few despite their fundamental importance in elucidating the physical mechanisms responsible for gelation. In this study, we use a home-built micron-gap rheometer combined with confocal microscopy to directly investigate the coupled structural and dynamic properties of colloidal gelation transition by spatial confinement. We observe that confinement-induced gelation proceeds by a spinodal decomposition route where strongly confined colloidal suspensions evolve into "colloid-rich" and "colloid-poor" regions; the propagation of the "colloid-rich" region in three dimensions is responsible for structural arrest and strong viscoelastic enhancement when a critical film thickness approaches 16-25 particle layers. |
| 语种 | 英语 |
| WOS记录号 | WOS:000257287500065 |
| 出版者 | AMER PHYSICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/64575]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Sarangapani, Prasad S. |
| 作者单位 | 1.Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA 2.Chinese Acad Sci, Inst Chem, Beijing, 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sarangapani, Prasad S.,Yu, Yanghai,Zhao, Jiang,et al. Direct visualization of colloidal gelation under confinement[J]. PHYSICAL REVIEW E,2008,77(6). |
| APA | Sarangapani, Prasad S.,Yu, Yanghai,Zhao, Jiang,&Zhu, Yingxi.(2008).Direct visualization of colloidal gelation under confinement.PHYSICAL REVIEW E,77(6). |
| MLA | Sarangapani, Prasad S.,et al."Direct visualization of colloidal gelation under confinement".PHYSICAL REVIEW E 77.6(2008). |
入库方式： OAI收割
来源：化学研究所
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