Surface-induced phase transitions in thin films of dendrimer block copolymers

e-Polymers

Lin Bo¹  Zhu Qingying¹  Zheng Chen¹  Xie Fang¹ 

[1] School of Chemistry and Materials Engineering, Huizhou University, Guangdong516007, China;

关键词: dendrimer block copolymer;    surface confinement;    self-consistent field theory;    phase morphology;    phase transition;   

DOI  :  10.1515/epoly-2020-0009

来源: DOAJ

【 摘 要 】

The phase morphologies and phase transitions of dendrimer block copolymer thin films confined between two homogeneous, planar hard substrates had been investigated by a three-dimensional real space self-consistent field theory (SCFT). From the perspectives of property and strength of the preferential substrate, when the film system confined within neutral substrates, the thinner film was easier to take the undulated and perpendicular cylinder phases. For the attractive preference of the substrate on block segment A, the polymer films tended to take the surface-wetting structures that was composed by block segment A. On the contrary, for the repulsive preference of the substrate on block segment A, a phase transition of cylinder-lamellae could be observed increasing with the relative surface strength of the preferential substrate.

【 授权许可】

Unknown