STUDY OF COARSENING OF MICRODOMAINS IN BLOCK COPOLYMERS BY LATTICE BOLTZMANN METHODS
文献类型：期刊论文
| 作者 | Song Kaixu1,2; Sun Zhaoyan1; Li Hongfei1; An Lijia1 |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2009-02-20 |
| 期号 | 2页码:159-165 |
| 关键词 | Lattice Boltzmann Method Microphase Separation Block Copolymers Coarsening |
| ISSN号 | 1000-3304 |
| 英文摘要 | In order to understand the coarsening of microdomains in symmetric diblock copolymers at the late stage, a model for block copolymers is proposed. By incorporating the self consistent field theory with the free energy approach Lattice Boltzmann model, hydrodynamic interactions can be considered. Compared with models based on Ginzburg-Landau free energy, this model does not employ phenomenological free energies to describe systems. The model is verified by comparing the simulation results obtained using this method with those of a dynamical version of the self consistent mean field theory. After that,the growth exponents of the characteristic domain size for symmetric block copolymers at late stage are studied. It is found that the viscosity of the system affects the growth exponents greatly, although the growth exponents are all less than 1/3 Furthermore, the relations between the growth exponent, the interaction parameter and the chain length are studied. The rescaled simulation results show that the dependence of growth exponent on the interaction parameter is trivial; however,the length of the polymer chain may lead to the change of the growth exponent. This conclusion is different from that based on a free energy function given by the Ginzburg Landau expression. This difference may come from the additional correlation considered in the self consistent field theory of our model. Nevertheless, the chain length effect on the growth exponent is little compared with that of the fluid viscosity. |
| 语种 | 英语 |
| WOS记录号 | WOS:000263728700011 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/67351]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Song Kaixu |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song Kaixu,Sun Zhaoyan,Li Hongfei,et al. STUDY OF COARSENING OF MICRODOMAINS IN BLOCK COPOLYMERS BY LATTICE BOLTZMANN METHODS[J]. ACTA POLYMERICA SINICA,2009(2):159-165. |
| APA | Song Kaixu,Sun Zhaoyan,Li Hongfei,&An Lijia.(2009).STUDY OF COARSENING OF MICRODOMAINS IN BLOCK COPOLYMERS BY LATTICE BOLTZMANN METHODS.ACTA POLYMERICA SINICA(2),159-165. |
| MLA | Song Kaixu,et al."STUDY OF COARSENING OF MICRODOMAINS IN BLOCK COPOLYMERS BY LATTICE BOLTZMANN METHODS".ACTA POLYMERICA SINICA .2(2009):159-165. |
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。