ICCAS OpenIR
STUDY OF COARSENING OF MICRODOMAINS IN BLOCK COPOLYMERS BY LATTICE BOLTZMANN METHODS
Song Kaixu1,2; Sun Zhaoyan1; Li Hongfei1; An Lijia1
2009-02-20
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue2Pages:159-165
AbstractIn 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.
KeywordLattice Boltzmann Method Microphase Separation Block Copolymers Coarsening
Indexed BySCI
Language英语
WOS IDWOS:000263728700011
PublisherSCIENCE PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67352
Collection中国科学院化学研究所
Corresponding AuthorSong Kaixu
Affiliation1.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
Recommended Citation
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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Song Kaixu]'s Articles
[Sun Zhaoyan]'s Articles
[Li Hongfei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Song Kaixu]'s Articles
[Sun Zhaoyan]'s Articles
[Li Hongfei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Song Kaixu]'s Articles
[Sun Zhaoyan]'s Articles
[Li Hongfei]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.