论文标题
杆/线圈块共聚物中的自组装：在不融合下的退化行为
Self-assembly in rod/coil block copolymers: Degenerate behavior under nonconfinement
论文作者
论文摘要
含有刚性块的块共聚物的自组装由于其丰富的相行为和在各种应用中使用的潜力而受到了持续的关注。在这项工作中，在杆/线圈组件之间的不对称相互作用下，使用晶格模型的自洽场研究了线圈/线圈/杆ABC三嵌段共聚物的自组装。除胶束外，观察到中心对称片状片（CSLM），薄片，穿孔薄片，条带和某制，非中心对称（NCSLM）薄片和波浪形形态是稳定阶段的。鉴于线圈成分之间的固定相互作用，构建了杆和线圈组件之间相互作用的相图。对于中间杆级分，观察到退化行为。 NCSLM和CSLM是退化结构。发现链构象的熵对于这种丰富的行为起着重要作用。在非封闭情况下，在线圈/杆块共聚物中提出了退化行为的机制。这项研究提供了一些新的见解，对块组合物的退化行为，这可以为相关实验提供理论参考。
The self-assembly of block copolymers containing rigid blocks have received abiding attention due to its rich phase behavior and potential for use in a variety of applications. In this work, under asymmetric interactions between rod/coil components, the self-assembly of coil/coil/rod ABC triblock copolymers is studied using self-consistent field of lattice model. In addition to micelles, centrosymmetric lamellae (CSLM), lamellae, perforated lamellae, strips and gyroids, non-centrosymmetric (NCSLM) lamellae and wavy morphologies are observed as stable phases. The phase diagram of interaction between rod and coil components versus the rod fraction is constructed given a fixed interaction between coil components. For intermediate rod fraction, degenerate behavior is observed. NCSLM and CSLM are degenerate structures. It is found that the entropy of chain conformation plays an important role for this rich behavior. A mechanism of the degenerate behavior is proposed in coil/rod block copolymers under noncofinement. This study provides some new insights into the degenerate behavior of block compolymers, which can offer a theoretical reference for related experiments.
