Simulated annealing study of diblock copolymer thin films confined between two homogeneous surfaces. |
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| Authors: | Yuhua Yin Pingchuan Sun Tiehong Chen Baohui Li Qinghua Jin Datong Ding An-Chang Shi |
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| Affiliation: | State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Joint-research College of Nankai University, Tianjin University, Department of Physics, Nankai University, Tianjin, 300071, PR China. |
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| Abstract: | Thin films of symmetric diblock copolymers confined between two parallel surfaces have been systematically investigated by means of simulated annealing on a simple cubic lattice. The study was carried out for systems with different film thicknesses and surface-polymer interactions. Very regular equilibrium morphologies of lamella are formed in almost all cases. The dependence of lamellar orientations, total energy, chain-conformation entropy, and free energy of the confined films on the film thickness and the strength of surface-polymer interactions has been studied systematically. The influence of packing frustration on morphology is observed and the mechanisms of lamellar orientations are investigated. |
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| Keywords: | annealing copolymer lamella self‐assembly thin films |
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