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Studies on coarsening of microdomains in binary polymer mixtures by Lattice Boltzmann methods
Song Kai-Xu1,3; Sun Zhao-Yan1; An Li-Ja1; Tong Zhen2
2008-03-10
Source PublicationCHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN0251-0790
Volume29Issue:3Pages:645-650
AbstractAn improved free energy approach Lattice Boltzmann model(LBM) is proposed by introducing a forcing term instead of the pressure tensor. This model can reach the proper thermodynamic equilibrium after enough simulation time. On the basis of this model, the phase separation in binary polymer mixtures is studied by applying a Flory-Huggins-type free energy. The numerical results show good agreement with the analytic coexistence curve. This model can also be used to study the coarsening of microdomains in binary polymer mixtures at the early and intermediate stages. The simulation results are in accordance with those found in experiments. To understand the coarsening of microdomains at the late stage, we study the relationship between the growth exponent of the characteristic domain size and the interaction parameter chi and chain length N. The rescaled simulation results show that the growth exponent dependence on chi and N is trivial, while the growth exponent dependence on the fluid viscosity is dominant.
KeywordLattice Boltzmann Method Phase Separation Coarsening
Indexed BySCI
Language英语
WOS IDWOS:000254265100044
PublisherHIGHER EDUCATION PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65670
Collection中国科学院化学研究所
Corresponding AuthorSun Zhao-Yan
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.S China Univ Technol, Coll Mat Sci, Guangzhou 510641, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Song Kai-Xu,Sun Zhao-Yan,An Li-Ja,et al. Studies on coarsening of microdomains in binary polymer mixtures by Lattice Boltzmann methods[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2008,29(3):645-650.
APA Song Kai-Xu,Sun Zhao-Yan,An Li-Ja,&Tong Zhen.(2008).Studies on coarsening of microdomains in binary polymer mixtures by Lattice Boltzmann methods.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,29(3),645-650.
MLA Song Kai-Xu,et al."Studies on coarsening of microdomains in binary polymer mixtures by Lattice Boltzmann methods".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 29.3(2008):645-650.
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