ISOTROPIC LIFSHITZ BEHAVIOR IN BLOCK COPOLYMER-HOMOPOLYMER BLENDS

被引：108

作者：

BATES, FS ^{[1
]}

MAURER, W ^{[1
]}

LODGE, TP ^{[1
]}

SCHULZ, MF ^{[1
]}

MATSEN, MW ^{[1
]}

ALMDAL, K ^{[1
]}

MORTENSEN, K ^{[1
]}

机构：

[1] RISO NATL LAB,DK-4000 ROSKILDE,DENMARK

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.75.4429

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A series of mixtures composed of a symmetric A-B diblock copolymer and a symmetric blend of A and B homopolymers was investigated by small-angle neutron scattering. Mean-field theory predicts that a line of lamellar-disorder transitions with wave-vector instability q* > 0 will meet a line of critical points with q* = 0 in the three-component mixture at an isotropic Lifshitz point. Mean-field Lifshitz behavior (gamma = 1 and nu = 1/4) was observed in the disordered state at the anticipated composition to within 1 K of the phase transition.

引用

页码：4429 / 4432

页数：4

共 50 条

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