文献类型：期刊文献

英文题名：Hierarchically ordered microstructures self-assembled from A(BC) n multiblock copolymers

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

机构：[1] Shanghai Key Laboratory of Advanced Polymeric Materials, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China

年份：2010

卷号：43

期号：3

起止页码：1602

外文期刊名：Macromolecules

收录：EI(收录号：20100612700281)

语种：英文

外文关键词：Microstructure - Cylinders (shapes) - Molecular orbitals

摘要：Using real-space self-consistent field theory, we explored hierarchical microstructures selfassembled from A(BC)., multiblock copolymers. The multiblock copolymers were classified into two types in terms of relative magnitude of A/B and A/C interaction strengths: one is that XABN is less than or equal to XAC-N and the other is that XABN is greater than XACN. For both cases, the multiblock copolymers can selfassemble into hierarchically ordered microstructures with two different length scales. For XABN ≤ XACN, various hierarchical microstructures, such as cylinders-in-lamellae", lamellae-in-lamella", cylinders- incylinder", and spheres-in-sphere", were observed. In these microphases, the small-length-scale structures and the large-length-scale structures are packed in the doubly parallel forms. It was found the number of internal small-length-scale structures can be tailored by tuning the number of BC block and the interaction strength between A and BC blocks. For XABN >XACN, in addition to the parallel packed hierarchical structures, the multiblock copolymers can self-organize into perpendicular packed hierarchical structures, in which the structures with small periods are arranged perpendicular to structures with large periods. These perpendicular packed hierarchical structures were found to be only stable at higher value of XBCN. ? 2010 American Chemical Society.