Enhanced concentration fluctuations in polymer solutions under shear flow

X. L. Wu; D. J. Pine; P. K. Dixon

doi:10.1103/PhysRevLett.66.2408

Enhanced concentration fluctuations in polymer solutions under shear flow

X. L. Wu, D. J. Pine, P. K. Dixon

Chemical and Biomolecular Engineering

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

Abstract

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 (Ìd1) and strong (Ìd1) shear regimes, where Ì is the shear rate and 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.

Original language	English (US)
Pages (from-to)	2408-2411
Number of pages	4
Journal	Physical Review Letters
Volume	66
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.66.2408
State	Published - 1991

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.66.2408

Cite this

@article{bf28c07a76ba463bb6fc1d672cad2b0d,

title = "Enhanced concentration fluctuations in polymer solutions under shear flow",

abstract = "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 ({\`I}d1) and strong ({\`I}d1) shear regimes, where {\`I} is the shear rate and 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.",

author = "Wu, {X. L.} and Pine, {D. J.} and Dixon, {P. K.}",

year = "1991",

doi = "10.1103/PhysRevLett.66.2408",

language = "English (US)",

volume = "66",

pages = "2408--2411",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "18",

}

TY - JOUR

T1 - Enhanced concentration fluctuations in polymer solutions under shear flow

AU - Wu, X. L.

AU - Pine, D. J.

AU - Dixon, P. K.

PY - 1991

Y1 - 1991

N2 - 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 (Ìd1) and strong (Ìd1) shear regimes, where Ì is the shear rate and 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.

AB - 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 (Ìd1) and strong (Ìd1) shear regimes, where Ì is the shear rate and 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.

UR - http://www.scopus.com/inward/record.url?scp=0001372116&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001372116&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.66.2408

DO - 10.1103/PhysRevLett.66.2408

M3 - Article

AN - SCOPUS:0001372116

SN - 0031-9007

VL - 66

SP - 2408

EP - 2411

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

ER -

Enhanced concentration fluctuations in polymer solutions under shear flow

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this