Cylindrical-confinement-induced phase behaviours of diblock copolymer melts |
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Authors: | Liu Mei-Jiao Li Shi-Ben Zhang Lin-Xi and Wang Xiang-Hong |
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Institution: | Department of Physics, Wenzhou University, Wenzhou 325035, China |
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Abstract: | The phase behaviours of diblock copolymers under
cylindrical confinement are studied in two-dimensional space by
using the self-consistent field theory. Several phase parameters are
adjusted to investigate the cylindrical-confinement-induced phase
behaviours of diblock copolymers. A series of lamella-cylinder
mixture phases, such as the mixture of broken-lamellae and cylinders
and the mixture of square-lamellae and cylinders, are observed by
varying the phase parameters, in which the behaviours of these
mixture phases are discussed in the corresponding phase diagrams.
Furthermore, the free energies of these mixture phases are
investigated to illustrate their evolution processes. Our results
are compared with the available observations from the experiments
and simulations respectively, and they are in good agreement and
provide an insight into the phase behaviours under cylindrical
confinement. |
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Keywords: | cylindrical confinement phase behaviour diblock
copolymer self-consistent field theory |
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