Discovering new ordered phases of block copolymers

被引：214

作者：

Bohbot-Raviv, Y ^{[1
]}

Wang, ZG ^{[1
]}

机构：

[1] CALTECH, Div Chem & Chem Engn, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.85.3428

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a new and general method for discovering novel ordered phases of block copolymer melts. The method involves minimizing a free energy functional in an arbitrary unit cell with respect to the composition profile and the dimensions of the unit cell, without any prior assumption of the microphase symmetry. Varying the initial conditions allows to search for different stable and metastable structures. Application of this method to ABC star and linear triblock copolymers using an approximate free energy reveals new morphologies not yet observed in experiment.

引用

页码：3428 / 3431

页数：4

共 27 条

[11]

Larson RG, 1996, J PHYS II, V6, P1441, DOI 10.1051/jp2:1996141

[12] THEORY OF MICROPHASE SEPARATION IN BLOCK CO-POLYMERS [J].

LEIBLER, L .

MACROMOLECULES, 1980, 13 (06) :1602-1617

[13] DENSITY-FUNCTIONAL THEORY OF PHASE-TRANSITIONS IN DIBLOCK COPOLYMER SYSTEMS [J].

LESCANEC, RL ;

MUTHUKUMAR, M .

MACROMOLECULES, 1993, 26 (15) :3908-3916

[14] Unifying weak- and strong-segregation block copolymer theories [J].

Matsen, MW ;

Bates, FS .

MACROMOLECULES, 1996, 29 (04) :1091-1098

[15] STABLE AND UNSTABLE PHASES OF A DIBLOCK COPOLYMER MELT [J].

MATSEN, MW ;

SCHICK, M .

PHYSICAL REVIEW LETTERS, 1994, 72 (16) :2660-2663

[16] Surfaces of tricontinuous structure formed by an ABC triblock copolymer in bulk [J].

Matsushita, Y ;

Suzuki, J ;

Seki, M .

PHYSICA B, 1998, 248 :238-242

[17] DENSITY FUNCTIONAL THEORY OF LAMELLAR ORDERING IN DIBLOCK COPOLYMERS [J].

MELENKEVITZ, J ;

MUTHUKUMAR, M .

MACROMOLECULES, 1991, 24 (14) :4199-4205

[18] PREPARATION AND MORPHOLOGY OF TRIBLOCK COPOLYMERS OF THE ABC TYPE [J].

MOGI, Y ;

KOTSUJI, H ;

KANEKO, Y ;

MORI, K ;

MATSUSHITA, Y ;

NODA, I .

MACROMOLECULES, 1992, 25 (20) :5408-5411

[19] MICROPHASE SEPARATION OF ABC-TYPE TRIBLOCK COPOLYMERS [J].

NAKAZAWA, H ;

OHTA, T .

MACROMOLECULES, 1993, 26 (20) :5503-5511

[20] EQUILIBRIUM MORPHOLOGY OF BLOCK COPOLYMER MELTS [J].

OHTA, T ;

KAWASAKI, K .

MACROMOLECULES, 1986, 19 (10) :2621-2632

← 1 2 3 →