Dissipative particle dynamics study on the morphology changes of diblock copolymer lamellar microdomains due to steady shear

Wei Liu; Hu Jun Qian; Zhong Yuan Lu; Ze Sheng Li; Chia Chung Sun

doi:10.1103/PhysRevE.74.021802

Dissipative particle dynamics study on the morphology changes of diblock copolymer lamellar microdomains due to steady shear

Wei Liu^*, Hu Jun Qian, Zhong Yuan Lu, Ze Sheng Li, Chia Chung Sun

^*Corresponding author for this work

Jilin University

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

The morphology changes of linear diblock copolymer lamellar microdomains under uniform simple shear are studied via the dissipative particle dynamics technique. The parallel and perpendicular reorientations of the lamellae are observed in the simulations, and two different reorientation mechanisms, under small and large shear rates respectively, are proposed. The parallel-to- perpendicular transition is also observed and the kinetics is discussed. Sinusoidal and chevron instabilities due to the shear are found. After relaxation the peculiar â€œbidirectionally undulatingâ € instability is obtained.

Original language	English
Article number	021802
Journal	Physical Review E
Volume	74
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevE.74.021802
Publication status	Published - 2006
Externally published	Yes

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Liu, W., Qian, H. J., Lu, Z. Y., Li, Z. S., & Sun, C. C. (2006). Dissipative particle dynamics study on the morphology changes of diblock copolymer lamellar microdomains due to steady shear. Physical Review E, 74(2), Article 021802. https://doi.org/10.1103/PhysRevE.74.021802

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title = "Dissipative particle dynamics study on the morphology changes of diblock copolymer lamellar microdomains due to steady shear",

abstract = "The morphology changes of linear diblock copolymer lamellar microdomains under uniform simple shear are studied via the dissipative particle dynamics technique. The parallel and perpendicular reorientations of the lamellae are observed in the simulations, and two different reorientation mechanisms, under small and large shear rates respectively, are proposed. The parallel-to- perpendicular transition is also observed and the kinetics is discussed. Sinusoidal and chevron instabilities due to the shear are found. After relaxation the peculiar {\^a}€{\oe}bidirectionally undulating{\^a} € instability is obtained.",

author = "Wei Liu and Qian, {Hu Jun} and Lu, {Zhong Yuan} and Li, {Ze Sheng} and Sun, {Chia Chung}",

year = "2006",

doi = "10.1103/PhysRevE.74.021802",

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AU - Liu, Wei

AU - Qian, Hu Jun

AU - Lu, Zhong Yuan

AU - Li, Ze Sheng

AU - Sun, Chia Chung

PY - 2006

Y1 - 2006

N2 - The morphology changes of linear diblock copolymer lamellar microdomains under uniform simple shear are studied via the dissipative particle dynamics technique. The parallel and perpendicular reorientations of the lamellae are observed in the simulations, and two different reorientation mechanisms, under small and large shear rates respectively, are proposed. The parallel-to- perpendicular transition is also observed and the kinetics is discussed. Sinusoidal and chevron instabilities due to the shear are found. After relaxation the peculiar â€œbidirectionally undulatingâ € instability is obtained.

AB - The morphology changes of linear diblock copolymer lamellar microdomains under uniform simple shear are studied via the dissipative particle dynamics technique. The parallel and perpendicular reorientations of the lamellae are observed in the simulations, and two different reorientation mechanisms, under small and large shear rates respectively, are proposed. The parallel-to- perpendicular transition is also observed and the kinetics is discussed. Sinusoidal and chevron instabilities due to the shear are found. After relaxation the peculiar â€œbidirectionally undulatingâ € instability is obtained.

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DO - 10.1103/PhysRevE.74.021802

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Dissipative particle dynamics study on the morphology changes of diblock copolymer lamellar microdomains due to steady shear

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