Optimizing Chain Topology of Bottle Brush Copolymer for Promoting the Disorder-to-Order Transition |
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Authors: | Jihoon Park Hyun-Woo Shin Joona Bang June Huh |
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Affiliation: | 1.Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Korea;2.College of Medicine, Seoul National University, Seoul 03080, Korea;3.Department of Life Sciences, Korea University, Seoul 02841, Korea |
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Abstract: | The order-disorder transitions (ODT) of core-shell bottle brush copolymer and its structural isomers were investigated by dissipative particle dynamics simulations and theoretically by random phase approximation. Introducing a chain topology parameter which parametrizes linking points between M diblock chains each with N monomers, the degree of incompatibility at ODT (; being the Flory–Huggins interaction parameter between constituent monomers) was predicted as a function of chain topology parameter () and the number of linked diblock chains per bottle brush copolymer (M). It was found that there exists an optimal chain topology about at which gets a minimum while the domain spacing remains nearly unchanged. The prediction provides a theoretical guideline for designing an optimal copolymer architecture capable of forming sub-10 nm periodic structures even with non-high components. |
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Keywords: | block copolymer bottle brush copolymer order-disorder transition |
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