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Effects of Asymmetric Interaction Energies on the Microphase Separation Behavior of H‐shaped (AC)B(CA) Ternary Block Copolymer Systems: A Real‐Space SCF Study
Author(s) -
Sun DeWen,
Sun ZhaoYan,
Li HongFei,
An LiJia
Publication year - 2010
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/mats.200900070
Subject(s) - copolymer , ternary operation , morphology (biology) , confined space , phase diagram , flory–huggins solution theory , materials science , cylinder , phase (matter) , space (punctuation) , shell (structure) , honeycomb , core (optical fiber) , block (permutation group theory) , spheres , focus (optics) , hexagonal crystal system , crystallography , chemistry , physics , geometry , optics , polymer , mathematics , organic chemistry , composite material , linguistics , philosophy , biology , computer science , genetics , programming language , astronomy
The microphase separation behavior of H‐shaped (AC)B(CA) ternary block copolymer systems with asymmetric interaction parameters are studied in 3D space by a combinatorial screening method based on SCF theory. The focus is on systems with asymmetric interaction energies among three species, where the Flory‐Huggins interaction parameters obey χ AC < χ AB = χ BC and χ AC > χ AB = χ BC . It is shown that the asymmetric interaction energies enlarge the stable regions of “two‐color” and “three‐color” core/shell microphase morphologies near the three edges of triangle phase diagrams. The “three‐color” hexagonal honeycomb packed cylinder (HEX 3 ‐PC) morphology and the simple cubic spheres connected by cylinders (SCS + C) morphology are found stable.