Multipod structures of lamellae‐forming diblock copolymers in three‐dimensional confinement spaces: Experimental observation and computer simulation
Multipod structures of lamellae‐forming diblock copolymers in three‐dimensional confinement spaces: Experimental observation and computer simulation
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DOI：
10.1002/polb.24072
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发表时间：
2016-09
期刊：
影响因子：
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通讯作者：
T. Higuchi;M. Pinna;A. Zvelindovsky;H. Jinnai;H. Yabu
中科院分区：
文献类型：
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作者：
T. Higuchi;M. Pinna;A. Zvelindovsky;H. Jinnai;H. Yabu
从实验和计算两方面研究了三维限域效应对嵌段共聚物微相分离结构的影响。通过将不良溶剂添加到嵌段共聚物溶液中并随后蒸发良溶剂来制备嵌段共聚物纳米颗粒。用透射电子显微断层扫描（TEMT）定量测定纳米颗粒的三维结构。TEMT观测表明，在三维约束条件下形成了各种复杂的结构，包括网球状、蘑菇状和多脚状结构。详细的结构分析表明，与另一嵌段相比，二嵌段共聚物的一个嵌段稍微倾向于偏析到颗粒表面。利用细胞动力学计算机模拟进一步阐述了所观察到的结构
The three-dimensional (3D) confinement effect on the microphase-separated structure of a diblock copolymer was investigated both experimentally and computationally. Block copolymer nanoparticles were prepared by adding a poor solvent into a block copolymer solution and subsequently evaporating the good solvent. The 3D structures of the nanoparticles were quantitatively determined with transmission electron microtomography (TEMT). TEMT observations revealed that various complex structures, including tennis-ball, mushroom-like, and multipod structures, were formed in the 3D confinement. Detailed structural analysis, showed that one block of the diblock copolymer slightly prefers to segregate into the particle surface compared with the other block. The observed structures were further elaborated using cell dynamics computer simulation