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Chin. Phys. B, 2016, Vol. 25(11): 118201    DOI: 10.1088/1674-1056/25/11/118201
INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY Prev   Next  

Block copolymer morphologies confined by square-shaped particle: Hard and soft confinement

Qiyi Zhang(张启义), Wenyan Yang(杨文艳), Kaiyan Hu(胡凯燕)
Department of Mathematics and Physics, Chongqing University of Science and Technology, Chongqing 401331, China
Abstract  The self-assembly of diblock copolymers confined around one square-shaped particle is studied systematically within two-dimensional self-consistent field theory (SCFT). In this model, we assume that the thin block copolymer film is confined in the vicinity of a square-shaped particle by a homopolymer melt, which is equivalent to the poor solvents. Multiple sequences of square-shaped particle-induced copolymer aggregates with different shapes and self-assembled internal morphologies are predicted as functions of the particle size, the structural portion of the copolymer, and the volume fraction of the copolymer. A rich variety of aggregates are found with complex internal self-assembled morphologies including complex structures of the vesicle, with one or several inverted micelle surrounded by the outer monolayer with the particle confined in the core. These results demonstrate that the assemblies of diblock copolymers formed around the square-shaped particle in poor solvents are of immediate interest to the assembly of copolymer and the morphology of biomembrane in the confined environment, as well as to the transitions of vesicles to micelles.
Keywords:  copolymer      square-shaped particle      soft confinement      field theory  
Received:  11 May 2016      Revised:  06 July 2016      Accepted manuscript online: 
PACS:  82.35.Np (Nanoparticles in polymers)  
  82.35.Jk (Copolymers, phase transitions, structure)  
  89.75.Fb (Structures and organization in complex systems)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 20804060) and the Research Foundation of Chongqing University of Science and Technology, China (Grant No. CK2013B16).
Corresponding Authors:  Qiyi Zhang     E-mail:  qyzhang520@163.com

Cite this article: 

Qiyi Zhang(张启义), Wenyan Yang(杨文艳), Kaiyan Hu(胡凯燕) Block copolymer morphologies confined by square-shaped particle: Hard and soft confinement 2016 Chin. Phys. B 25 118201

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