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Polymers 2018, 10(11), 1276; https://doi.org/10.3390/polym10111276

Surface-Induced Nanostructures and Phase Diagrams of ABC Linear Triblock Copolymers under Spherical Confinement: A Self-Consistent Field Theory Simulation

1
Department of Physics, Wenzhou Vocational & Technical College, Wenzhou 325035, Zhejiang, China
2
Department of Physics, Wenzhou University, Wenzhou 325035, Zhejiang, China
*
Authors to whom correspondence should be addressed.
Received: 23 October 2018 / Revised: 8 November 2018 / Accepted: 14 November 2018 / Published: 16 November 2018
(This article belongs to the Special Issue Polymer in Confinement)
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Abstract

We investigate the nanostructures and phase diagrams of ABC linear triblock copolymers confined in spherical cavities by using real-space self-consistent field theory. Various 3D morphologies, such as spherical concentric lamellae, dumbbell-like cylinder, and rotational structures, are identified in the phase diagrams, which are constructed on the basis of the diameters of spherical cavities and the interaction between the polymers and preferential surfaces. We designate specific monomer-monomer interactions and block compositions, with which the polymers spontaneously form a cylindrical morphology in bulk, and firstly study morphology transformation with a neutral surface when a confining radius progressively increases. We then focus on phase morphologies under the preferential surfaces and consolidate them into phase diagrams. The spherical radius and the degree of preferential interactions can obviously induce the formation of a cylindrical morphology. Theoretical results correspond to an amount of recent experimental observations to a high degree and contribute to synthesising functional materials. View Full-Text
Keywords: linear triblock copolymer; self-consistent field theory; spherical confinement; preferential surface linear triblock copolymer; self-consistent field theory; spherical confinement; preferential surface
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Wu, J.; Huang, Z.; Lang, W.; Wang, X.; Li, S. Surface-Induced Nanostructures and Phase Diagrams of ABC Linear Triblock Copolymers under Spherical Confinement: A Self-Consistent Field Theory Simulation. Polymers 2018, 10, 1276.

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