棒-棒二嵌段共聚物自组装行为的自洽场研究

利用格子自洽场模型, 模拟了棒-棒二嵌段共聚物熔体系统的自组装行为, 并与线-棒二嵌段共聚物系统性质进行了对比. 结果表明, 棒-棒二嵌段共聚物系统的有序无序转变临界点低于线-棒二嵌段共聚物系统的相变临界点. 通过模拟计算, 发现薄层交叠柱状相、柱状相、层状相和Z形层状相4种稳定的有序形貌. 薄层交叠柱状相和柱状相仅在有序无序转变曲线的边缘位置出现, 层状相也仅存在于有序无序转变临界点上面的一小块区域内, 而稳定的Z形层状结构则占据了相图中较强相互作用的大部分区域.

Study on Self-assemble of Rod-rod Diblock Copolymers with Self-consistent Field Lattice Model

The self-assemble behavior of the rod-rod diblock copolymers was studied by means of self-consistent field lattice model,and the results were compared with the coil-rod diblock copolymers.It is shown that the order-disorder transition point of rod-rod diblock copolymers is lower than that of coil-rod diblock copolymers.Four stable structures are obtained,i.e.,overlapping cylinders,cylinders,lamellae and zigzag lamellae.The overlapping cylinders and cylinders occur only in the region near the order-disorder ...