Progress in coagulation rate measurements of colloidal dispersions
文献类型：期刊论文
| 作者 | Xu SH(徐升华) ; Sun ZW(孙祉伟)
|
| 刊名 | Soft Matter
 |
| 出版日期 | 2011 |
| 卷号 | 7期号:24页码:11298-11308 |
| 通讯作者邮箱 | sunzw@imech.ac.cn |
| 关键词 | Dynamic Light-Scattering Heteroaggregation Rate Constants Collision Efficiency Factor Aggregation Rate Constants Turbidity Measurement Cross-Sections Microscopic Approach Polystyrene Latex Optical Tweezers Particle Dimers |
| ISSN号 | 1744-683X |
| 产权排序 | [Xu, Shenghua; Sun, Zhiwei] Chinese Acad Sci, Key Lab Micrograv, Inst Mech, Beijing 100190, Peoples R China; [Xu, Shenghua; Sun, Zhiwei] Chinese Acad Sci, Natl Micrograv Lab, Inst Mech, Beijing 100190, Peoples R China |
| 通讯作者 | Sun, ZW (reprint author), Chinese Acad Sci, Key Lab Micrograv, Inst Mech, Beijing 100190, Peoples R China |
| 中文摘要 | This article reviews recent advances in coagulation rate measurements of colloidal dispersions, with emphasis on the turbidity method. For turbidity method, measurement of the coagulation rate relies upon the turbidity change resulting from the coagulation process, and the measuring sensitivity significantly depends on particle size and the wavelength used. There exists a "zero sensitivity" blind point for measurement at a specific wavelength, suggesting that such measurements should be performed at a wavelength some distance from the blind point. The major difficulty in determining absolute coagulation rate constant (CRC) by light scattering and turbidity measurements is how to theoretically solve the scattering problem of 2-particle aggregates. The T-matrix method accurately solves this problem, showing its superiority over various earlier theoretical approximations (applicable only to small particles). Results from studies on effects of forward scattering, multiple scattering, etc., provide guidelines for choosing proper particle size and volume fraction for the allowed margin of measurement error. Most of these findings on turbidity methods are also valid or applicable to other scattering methods. Finally, we introduce a new microscopic approach to assess the colloidal stability at individual particle levels, by means of directly observing artificially induced collision with the aid of optical tweezers. |
| 学科主题 | Chemistry; Materials Science; Physics; Polymer Science |
| 分类号 | 一类 |
| 类目[WOS] | Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Multidisciplinary ; Polymer Science |
| 研究领域[WOS] | Chemistry ; Materials Science ; Physics ; Polymer Science |
| 关键词[WOS] | DYNAMIC LIGHT-SCATTERING ; HETEROAGGREGATION RATE CONSTANTS ; COLLISION EFFICIENCY FACTOR ; AGGREGATION RATE CONSTANTS ; TURBIDITY MEASUREMENT ; CROSS-SECTIONS ; MICROSCOPIC APPROACH ; POLYSTYRENE LATEX ; OPTICAL TWEEZERS ; PARTICLE DIMERS |
| 收录类别 | SCI ; EI |
| 资助信息 | We thank Mr Michael R. Honig for his help in editing this manuscript. This work is supported by Grants 10972217, 10932012 and 11032011 from the National Natural Science Foundation of China. |
| 原文出处 | http://dx.doi.org/10.1039/c1sm06237a |
| 语种 | 英语 |
| WOS记录号 | WOS:000297425700002 |
| 公开日期 | 2012-04-01 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/45107]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 推荐引用方式 GB/T 7714 | Xu SH,Sun ZW. Progress in coagulation rate measurements of colloidal dispersions[J]. Soft Matter,2011,7(24):11298-11308. |
| APA | Xu SH,&Sun ZW.(2011).Progress in coagulation rate measurements of colloidal dispersions.Soft Matter,7(24),11298-11308. |
| MLA | Xu SH,et al."Progress in coagulation rate measurements of colloidal dispersions".Soft Matter 7.24(2011):11298-11308. |
入库方式： OAI收割
来源：力学研究所
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。