Phase Diagram of Rod-Coil Diblock Copolymer Melts

Jiuzhou Tang; Ying Jiang; Xinghua Zhang; Dadong Yan; Jeff Z.Y. Chen

doi:10.1021/acs.macromol.5b02235

Phase Diagram of Rod-Coil Diblock Copolymer Melts

Jiuzhou Tang
, Ying Jiang
, Xinghua Zhang
, Dadong Yan^*
, Jeff Z.Y. Chen

^*Corresponding author for this work

School of Chemistry

CAS - Institute of Chemistry
Beijing Jiaotong University
Beijing Normal University
University of Waterloo

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

48 Scopus citations

Abstract

A unified phase diagram is presented for rod-coil diblock copolymer melts in the isotropic phase regime as a function of the asymmetric parameter. The study is based on free energy calculation, which incorporates three-dimensional spatial variations of the volume fraction with angular dependence. The wormlike-chain model is used in a self-consistent field treatment. Body-centered cubic, A15, hexagonal, gyroid, and lamellar structures where the rod segments are packed inside the convex rod-coil interface are found stable. As the conformational asymmetric parameter increases, the A15 phase region expands and the gyroid phase region reduces. The stability of the structures is analyzed by concepts such as packing frustration, spinodal limit, and interfacial curvature.

Original language	English
Pages (from-to)	9060-9070
Number of pages	11
Journal	Macromolecules
Volume	48
Issue number	24
DOIs	https://doi.org/10.1021/acs.macromol.5b02235
State	Published - 22 Dec 2015

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title = "Phase Diagram of Rod-Coil Diblock Copolymer Melts",

abstract = "A unified phase diagram is presented for rod-coil diblock copolymer melts in the isotropic phase regime as a function of the asymmetric parameter. The study is based on free energy calculation, which incorporates three-dimensional spatial variations of the volume fraction with angular dependence. The wormlike-chain model is used in a self-consistent field treatment. Body-centered cubic, A15, hexagonal, gyroid, and lamellar structures where the rod segments are packed inside the convex rod-coil interface are found stable. As the conformational asymmetric parameter increases, the A15 phase region expands and the gyroid phase region reduces. The stability of the structures is analyzed by concepts such as packing frustration, spinodal limit, and interfacial curvature.",

author = "Jiuzhou Tang and Ying Jiang and Xinghua Zhang and Dadong Yan and Chen, \{Jeff Z.Y.\}",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

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doi = "10.1021/acs.macromol.5b02235",

language = "英语",

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T1 - Phase Diagram of Rod-Coil Diblock Copolymer Melts

AU - Tang, Jiuzhou

AU - Jiang, Ying

AU - Zhang, Xinghua

AU - Yan, Dadong

AU - Chen, Jeff Z.Y.

PY - 2015/12/22

Y1 - 2015/12/22

N2 - A unified phase diagram is presented for rod-coil diblock copolymer melts in the isotropic phase regime as a function of the asymmetric parameter. The study is based on free energy calculation, which incorporates three-dimensional spatial variations of the volume fraction with angular dependence. The wormlike-chain model is used in a self-consistent field treatment. Body-centered cubic, A15, hexagonal, gyroid, and lamellar structures where the rod segments are packed inside the convex rod-coil interface are found stable. As the conformational asymmetric parameter increases, the A15 phase region expands and the gyroid phase region reduces. The stability of the structures is analyzed by concepts such as packing frustration, spinodal limit, and interfacial curvature.

AB - A unified phase diagram is presented for rod-coil diblock copolymer melts in the isotropic phase regime as a function of the asymmetric parameter. The study is based on free energy calculation, which incorporates three-dimensional spatial variations of the volume fraction with angular dependence. The wormlike-chain model is used in a self-consistent field treatment. Body-centered cubic, A15, hexagonal, gyroid, and lamellar structures where the rod segments are packed inside the convex rod-coil interface are found stable. As the conformational asymmetric parameter increases, the A15 phase region expands and the gyroid phase region reduces. The stability of the structures is analyzed by concepts such as packing frustration, spinodal limit, and interfacial curvature.

UR - https://www.scopus.com/pages/publications/84951804030

U2 - 10.1021/acs.macromol.5b02235

DO - 10.1021/acs.macromol.5b02235

M3 - 文章

AN - SCOPUS:84951804030

SN - 0024-9297

VL - 48

SP - 9060

EP - 9070

JO - Macromolecules

JF - Macromolecules

IS - 24

ER -

Phase Diagram of Rod-Coil Diblock Copolymer Melts

Abstract

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