Theoretical Study of Phase Behavior of Frustrated ABC Linear Triblock Copolymers
Theoretical Study of Phase Behavior of Frustrated ABC Linear Triblock Copolymers
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受阻ABC线性三嵌段共聚物相行为的理论研究
DOI：
10.1021/ma302060m
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发表时间：
2012-12-11
期刊：
影响因子：
5.5
通讯作者：
Shi, An-Chang
中科院分区：
文献类型：
--
作者：
Liu, Meijiao;Li, Weihua;Shi, An-Chang
利用自洽场理论系统地研究了ABC线性三嵌段共聚物熔体的自组装行为，重点研究了编织图案（KP）相的出现和稳定性。KP是由“受抑”线性三嵌段共聚物形成的最有趣的非常规相之一，其中两个末端嵌段之间的相互作用比相邻嵌段之间的相互作用弱得多。具体地，通过比较约10种候选结构的自由能来构建线性ABC三嵌段共聚物熔体的相图，所述候选结构包括编织图案、三色层状结构（L3）、核-壳圆柱体（CSC）、穿孔层状结构（PL）、层内圆柱体（LC）、三重/四重圆柱体叠圆柱体（C3/C4）、双/三重螺旋体叠圆柱体（H2 C/H3C）、和穿孔的圆柱形薄片（PC）。的相行为的结果，提出了三种情况下，随着嵌段共聚物的复杂性增加。首先，我们调查了稳定的...
The self-assembling behavior of ABC linear triblock copolymer melts is systematically studied using the self-consistent field theory, focusing on the emergence and stability of the knitting-pattern (KP) phase. The KP is one of the most intriguing unconventional phases formed from ”frustrated” linear triblock copolymers, where the interaction between the two end blocks is much weaker than those between neighboring blocks. Specifically phase diagrams for linear ABC triblock copolymer melts are constructed by comparing the free energy of about 10 candidate structures, including the knitting patterns, three-color lamellae (L3), core–shell cylinders (CSC), perforated lamellae (PL), cylinders-within-lamellae (LC), triple/quadruple cylinders-on-cylinders (C3/C4), double/triple helices-on-cylinders (H2C/H3C), and perforated circular lamella-on-cylinders (PC). The results of the phase behavior are presented for three cases with increasing complexity of the block copolymers. First of all, we investigate the stable ...