文献类型：期刊文献

英文题名：Hierarchically Ordered Microstructures Self-Assembled from Comb-Coil Block Copolymers

作者：Wang, Liquan[1];Lin, Jiaping[1];Zhang, Liangshun[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2009

卷号：25

期号：8

起止页码：4735

外文期刊名：LANGMUIR

收录：;EI(收录号：20091812059236);WOS:【SCI-EXPANDED(收录号:WOS:000265281700075)】；

基金：This work was supported by the National Natural Science Foundation of China (50673026 and 20574018). Support from the Doctoral Foundation of Education Ministry of China (grant no. 20050251008) and the Projects of Shanghai Municipality (06SU07002, 082231, and B502) is also appreciated.

语种：英文

外文关键词：Cylinders (shapes) - Self assembly - Mean field theory - Molecular orbitals - Microstructure - Microphase separation

摘要：Using the real-space implemented self-consistent field theory, we undertook an investigation on the hierarchical self-assembly behaviors of comb-coil block copolymers. The comb-coil block copolymers can self-assemble into hierarchical microstructures with two different length scales. Various structure-within-structure morphologies, such as parallel and perpendicular lamella-within-lamella, cylinder-within-lamella, lamella-within-cylinder, and cylinder-within-cylinder, were observed. In the hierarchical structures, the large-length-scale structures are produced by segregation between the coil blocks and comb blocks, and the small-length-scale structures are formed by microphase separation within the comb blocks. Effects of interaction strength and coil block length on the hierarchical phase behaviors were studied, and the phase diagram was mapped out accordingly. Furthermore, the large-length-scale lamellar period as a function of interaction strength was examined. It was found the lamellar periods are greatly dependent on interaction strengths.