ENHANCED CONCENTRATION FLUCTUATIONS IN POLYMER-SOLUTIONS UNDER SHEAR-FLOW

被引：184

作者：

WU, XL ^{[1
]}

PINE, DJ ^{[1
]}

DIXON, PK ^{[1
]}

机构：

[1] EXXON RES & ENGN CO,ANNANDALE,NJ 08801

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.66.2408

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report an elastic-light-scattering experiment for a semidilute polymer solution under a uniform laminar shear flow. The concentration fluctuations are greatly enhanced by shear flow and their structure is highly anisotropic in both the weak (gamma-tau-d << 1) and strong (gamma-tau-d >> 1) shear regimes, where gamma is the shear rate and tau-d is the longest relaxation time of the system. The anisotropy is qualitatively different from binary liquid mixtures under a shear flow as a result of the strong coupling between the concentration fluctuations and the hydrodynamic flow.

引用

页码：2408 / 2411

页数：4

共 15 条

[1] LIGHT-SCATTERING STUDY OF A CRITICAL MIXTURE WITH SHEAR-FLOW
BEYSENS, D
GBADAMASSI, M
BOYER, L
[J]. PHYSICAL REVIEW LETTERS, 1979, 43 (17) : 1253 - 1256
[2] EFFECTS OF HYDRODYNAMICS ON GROWTH - SPINODAL DECOMPOSITION UNDER UNIFORM SHEAR-FLOW
CHAN, CK
PERROT, F
BEYSENS, D
[J]. PHYSICAL REVIEW LETTERS, 1988, 61 (04) : 412 - 415
[3] Doi M., 1990, DYNAMICS PATTERNS CO
[4] NON-NEWTONIAN PHENOMENA IN SIMPLE FLUIDS
EVANS, DJ
HANLEY, HJM
HESS, S
[J]. PHYSICS TODAY, 1984, 37 (01) : 26 - 33
[5] LIQUID STRUCTURE UNDER SHEAR - COMPARISON BETWEEN COMPUTER-SIMULATIONS AND COLLOIDAL SUSPENSIONS
HANLEY, HJM
RAINWATER, JC
CLARK, NA
ACKERSON, BJ
[J]. JOURNAL OF CHEMICAL PHYSICS, 1983, 79 (09) : 4448 - 4458
[6] HASHIMOTO T, 1990, DYNAMICS PATTERNS CO
[7] LARGE FLUCTUATIONS IN POLYMER-SOLUTIONS UNDER SHEAR
HELFAND, E
FREDRICKSON, GH
[J]. PHYSICAL REVIEW LETTERS, 1989, 62 (21) : 2468 - 2471
[8] HYDRODYNAMICS OF SEMIDILUTE POLYMER-SOLUTIONS
MILNER, ST
[J]. PHYSICAL REVIEW LETTERS, 1991, 66 (11) : 1477 - 1480
[9] MILNER ST, COMMUNICATION
[10] NAKATANI AI, 1989, POLYM COMMUN, V30, P43

← 1 2 →