Spherical/gyroid phase diagram of the diblock copolymer in the median selective solvent  

作　　者：ZHANG LingYun WANG PengYe SHI An-Chang 

机构地区：[1]Laboratory of Soft Matter Physics,Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]Department of Physics and Astronomy,McMaster University,Hamilton,Ontario,Canada L8S 4M1

出　　处：《Science China(Physics,Mechanics & Astronomy)》2009年第4期518-523,共6页中国科学：物理学、力学、天文学（英文版）

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 10834014, 10674173, and 30770517);the National Basic Research Program of China (Grant No. 2009CB930704)

摘　　要：The effect of the median selective solution on the lamellar,spherical and gyroid structures is studied. The self-consistent field equations of the diblock copolymer solution are solved by using the reciprocal space method. It is shown that the spherical and gyroid phases have the lowest free energy in the certain range of the solution concentration. Furthermore,the phase diagram of the ordered structures in the diblock copolymer solution with the median selective solvent is calculated,which is consistent with the experimental results.The effect of the median selective solution on the lamellar, spherical and gyroid structures is studied. The self-consistent field equations of the diblock copolymer solution are solved by using the reciprocal space method. It is shown that the spherical and gyroid phases have the lowest free energy in the certain range of the solution concentration. Furthermore, the phase diagram of the ordered structures in the diblock copolymer solution with the median selective solvent is calculated, which is consistent with the experimental results.

关 键 词：SELF-CONSISTENT field theory DIBLOCK COPOLYMER solution phase diagram reciprocal space method 

分 类 号：O414.1[理学—理论物理]