Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (3): 566.

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

HAN Xiang-Gang, ZHANG Cheng-Xiang*   

  1. College of Physics, Jilin University, Changchun 130023, China
  • Received:2009-06-10 Online:2010-03-10 Published:2010-03-10
  • Contact: ZHANG Cheng-Xiang

Abstract:

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 transition curve. Lamellae are observed in the region above the order-disorder transition point. However, the stable zigzag lamella structure occupies a big region corresponding to the strong interaction between two different components of diblock copolymers.

Key words: Polymer melt; Diblock copolymer; Self-assemble

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