Three-dimentional Numerical Simulations of Viscoelastic Phase Seperation in Polymer Solutions
文献类型：期刊论文
| 作者 | Yang, Ke-da1,2; Guo, Hong-xia1 |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2014-01-20 |
| 期号 | 1页码:88-98 |
| 关键词 | Viscoelastic Model Polymer Solution Viscoelastic Phase Separation Three-dimensional Numerical Simulation |
| ISSN号 | 1000-3304 |
| DOI | 10.3724/SP.J.1105.2014.13171 |
| 英文摘要 | The morphology and dynamics of viscoelastic phase separation in polymer solutions are investigated by the use of a graphic process unit (GPU) accelerated three-dimensional numerical simulation of a viscoelastic model for the first time. The results show the bulk stress is a prerequisite to the phase inversion. In agreement with the phase inversion observed in previous experiments, the polymer rich domain first forms a continuous network structure and then shrinks and inverts to a dispersed droplet structure. Interestingly, the growth of the bulk relaxation modulus suppresses the concentration fluctuation in the early stage of phase separation, and the phase inversion is thus delayed by the increase of bulk relaxation modulus. On the other hand, the growth of the bulk relaxation modulus increases the domain growth rate in the late stage of phase separation and leads to larger-sized polymer rich domains. Additionally, the growth of the shear relaxation modulus can help polymer rich domains to maintain network-like structures, and in the case of a larger shear relaxation modulus, the shear stress can exist for a longer time due to the slow relaxation of irregular polymer-rich domains in the late stage of phase separation. |
| 语种 | 英语 |
| WOS记录号 | WOS:000331779900010 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/51037]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Guo, Hong-xia |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Ke-da,Guo, Hong-xia. Three-dimentional Numerical Simulations of Viscoelastic Phase Seperation in Polymer Solutions[J]. ACTA POLYMERICA SINICA,2014(1):88-98. |
| APA | Yang, Ke-da,&Guo, Hong-xia.(2014).Three-dimentional Numerical Simulations of Viscoelastic Phase Seperation in Polymer Solutions.ACTA POLYMERICA SINICA(1),88-98. |
| MLA | Yang, Ke-da,et al."Three-dimentional Numerical Simulations of Viscoelastic Phase Seperation in Polymer Solutions".ACTA POLYMERICA SINICA .1(2014):88-98. |
入库方式： OAI收割
来源：化学研究所
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