THE EFFECTS OF PATTERNED SURFACES ON THE PHASE SEPARATION FOR DIBLOCK COPOLYMERS
THE EFFECTS OF PATTERNED SURFACES ON THE PHASE SEPARATION FOR DIBLOCK COPOLYMERS
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DOI：
10.1142/s0256767909003947
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发表时间：
2009
影响因子：
4.3
通讯作者：
Linli He;Linxi Zhang
中科院分区：
文献类型：
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作者：
Linli He;Linxi Zhang
采用三维耗散粒子动力学（DPD）模拟方法研究了两个硬质、平行且不同图案化表面之间的对称嵌段共聚物薄膜的相行为。在模拟体系的快照、密度分布和浓度图中，给出了不同图案化表面对对称二嵌段共聚物膜相分离的诱导作用。可以通过图案化表面来控制相分离。同时，还讨论了受限高分子链的均方端到端距离<$R2 <$。嵌段共聚物的表面诱导相分离可以帮助我们创造新型的可控纳米结构材料。
The phase behaviors of symmetric diblock copolymer thin films confined between two hard, parallel and diversified patterned surfaces are investigated by three-dimensional dissipative particle dynamics (DPD) simulations. The induction of diversified patterned surfaces on phase separation of symmetric diblock copolymer films in snapshots, density profiles and concentration diagrams of the simulated systems are presented. The phase separations can be controlled by the patterned surfaces. In the meantime, the mean-square end-to-end distance of the confined polymer chains 〈R2〉 is also discussed. Surface-induced phase separation for diblock copolymers can help us to create novel and controlled nanostructured materials.