Effect of particle/polymer number ratio on the structure and dynamics of complex between large polymer and nanoparticle
文献类型：期刊论文
| 作者 | Yan, Feng1,2; Ye, Lei1,2; Qu, Dong1,2 |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2016-10-20 |
| 卷号 | 507页码:67-75 |
| 关键词 | Colloid-polymer interaction Complex microstructure Particle to polymer number ratio Zero-shear viscosity |
| 英文摘要 | The effect of particle/polymer number ratio on the structure and dynamics of particle-polymer complexes at a fixed polymer concentration has been investigated. Mixtures of poly(ethylene oxide) (PEO, M-v =1,000,000 gmol(-1), R-h similar to 39nm) aqueous solution and colloidal silica dispersion (R-h similar to 10nm) were used as models. By adding silica particles, both zero-shear viscosity and R-h of the silica-PEO complexes increased with particle/polymer number ratio. The maximum zero-shear viscosity was reached when the PEO coils were saturated by silica particles. After that, a decrease in zero-shear viscosity and Rh was observed. SAXS results showed that PEO had a great effect on the inter-particle correlations before the PEO chains were saturated with silica particles, however, this effect diminished when even more silica particles were introduced. The reversible bridging interaction and inter-particle electrostatic repulsion were identified as the major factors accounting for the change in zero-shear viscosity and hydrodynamic size, and a tentative mechanism was proposed based on the spatial distribution of silica particles in the mixtures. (C) 2016 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35295]  |
| 专题 | 化学研究所_高分子物理与化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Feng,Ye, Lei,Qu, Dong. Effect of particle/polymer number ratio on the structure and dynamics of complex between large polymer and nanoparticle[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2016,507:67-75. |
| APA | Yan, Feng,Ye, Lei,&Qu, Dong.(2016).Effect of particle/polymer number ratio on the structure and dynamics of complex between large polymer and nanoparticle.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,507,67-75. |
| MLA | Yan, Feng,et al."Effect of particle/polymer number ratio on the structure and dynamics of complex between large polymer and nanoparticle".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 507(2016):67-75. |
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。