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Phase Behavior of ABC Cyclic Terpolymer Melts: A Simulation Study


The phase behavior of ABC cyclic terpolymer melts is investigated using a simulated annealing technique. Ternary phase diagram is constructed by tuning the volume fractions of the three blocks (fA, fB, fC) in the case of symmetric interactions. 11 phases are predicted, including lamellae with spheres at the interfaces, lamellae with spheres inside a domain, lamellae with spheres inside domains, cylinders in perforated lamellae, [6.6.6] tiling patterns, lamella + cylinder, hierarchical double-gyroid, columnar piled disk, patched spheres, cylinders with spheres at the interfaces and double gyroid with spheres at the interfaces. In these structures, the end segments of the three blocks tend to distribute uniformly on the A/B, B/C, or A/C interfaces, which may result in the superior mechanical property of the structures in cyclic terpolymer system than for the same structures formed in star or linear terpolymer systems. The physical reason of similarities and differences between the phases formed in ABC cyclic and star terpolymer systems is investigated. Our simulation results are compared with related experimental observations and theoretical calculations.

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Article information

26 Dec 2019
29 Jan 2020
First published
30 Jan 2020

Soft Matter, 2020, Accepted Manuscript
Article type

Phase Behavior of ABC Cyclic Terpolymer Melts: A Simulation Study

J. Wu, Z. Wang, Y. Yin, R. Jiang and B. Li, Soft Matter, 2020, Accepted Manuscript , DOI: 10.1039/C9SM02527H

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