STATIC AND DYNAMIC CROSSOVER IN A CRITICAL POLYMER MIXTURE

被引：131

作者：

BATES, FS

ROSEDALE, JH

STEPANEK, P

LODGE, TP

WILTZIUS, P

FREDRICKSON, GH

HJELM, RP

机构：

[1] UNIV MINNESOTA,DEPT CHEM,MINNEAPOLIS,MN 55455

[2] AT&T BELL LABS,MURRAY HILL,NJ 07974

[3] UNIV CALIF SANTA BARBARA,DEPT CHEM & NUCL ENGN,SANTA BARBARA,CA 93106

[4] UNIV CALIF SANTA BARBARA,DEPT MAT,SANTA BARBARA,CA 93106

[5] UNIV CALIF LOS ALAMOS SCI LAB,DIV PHYS,LOS ALAMOS NEUTRON SCATTERING CTR,LOS ALAMOS,NM 87545

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.65.1893

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A model low-molecular-weight polymer mixture was studied as a function of temperature near the critical point by small-angle neutron scattering (SANS) and dynamic light scattering (DLS). SANS measurements reveal a crossover in the static susceptibility from mean-field to non-mean-field behavior at TxTc+30°C, in quantitative agreement with the Ginzburg criterion. This crossover behavior is also reflected in the DLS experiments, which reveal mode-coupled critical dynamics far into the mean-field regime. © 1990 The American Physical Society.

引用

页码：1893 / 1896

页数：4

共 22 条

[11] RENORMALIZATION-GROUP CALCULATIONS OF DIVERGENT TRANSPORT-COEFFICIENTS AT CRITICAL-POINTS [J].