Structure and optical anisotropies of critical polymer solutions in electric fields

Denis Wirtz, Douglas E. Werner, Gerald G. Fuller

Research output: Contribution to journalArticle

Abstract

We present simultaneous measurements of both the small angle light scattering (SALS) structure factor and the dichroism for near-critical polymer solutions in electric fields. The theory of flow birefringence and dichroism proposed by Onuki and Doi is extended to the electric field case. This theory relates the electric-field-induced form dichroism to the second moment of the structure factor. Excellent agreement is observed between the form dichroism calculated from measured scattering intensities and the dichroism measured by optical polarimetry. In addition, a possible mechanism of dipolar coupling between the large critical concentration fluctuations and the electric field is proposed. Similar simultaneous SALS and birefringence measurements confirm this model of dipolar interaction.

Original languageEnglish (US)
Pages (from-to)1679-1686
Number of pages8
JournalThe Journal of Chemical Physics
Volume101
Issue number2
StatePublished - 1994

Fingerprint

Optical anisotropy
Polymer solutions
dichroism
Electric fields
anisotropy
electric fields
polymers
Birefringence
Light scattering
birefringence
light scattering
Polarimeters
Dichroism
polarimetry
Scattering
moments
scattering
interactions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Structure and optical anisotropies of critical polymer solutions in electric fields. / Wirtz, Denis; Werner, Douglas E.; Fuller, Gerald G.

In: The Journal of Chemical Physics, Vol. 101, No. 2, 1994, p. 1679-1686.

Research output: Contribution to journalArticle

Wirtz, Denis ; Werner, Douglas E. ; Fuller, Gerald G. / Structure and optical anisotropies of critical polymer solutions in electric fields. In: The Journal of Chemical Physics. 1994 ; Vol. 101, No. 2. pp. 1679-1686.
@article{ca5d10e88df5489b8c8ae1c61070a496,
title = "Structure and optical anisotropies of critical polymer solutions in electric fields",
abstract = "We present simultaneous measurements of both the small angle light scattering (SALS) structure factor and the dichroism for near-critical polymer solutions in electric fields. The theory of flow birefringence and dichroism proposed by Onuki and Doi is extended to the electric field case. This theory relates the electric-field-induced form dichroism to the second moment of the structure factor. Excellent agreement is observed between the form dichroism calculated from measured scattering intensities and the dichroism measured by optical polarimetry. In addition, a possible mechanism of dipolar coupling between the large critical concentration fluctuations and the electric field is proposed. Similar simultaneous SALS and birefringence measurements confirm this model of dipolar interaction.",
author = "Denis Wirtz and Werner, {Douglas E.} and Fuller, {Gerald G.}",
year = "1994",
language = "English (US)",
volume = "101",
pages = "1679--1686",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics Publising LLC",
number = "2",

}

TY - JOUR

T1 - Structure and optical anisotropies of critical polymer solutions in electric fields

AU - Wirtz, Denis

AU - Werner, Douglas E.

AU - Fuller, Gerald G.

PY - 1994

Y1 - 1994

N2 - We present simultaneous measurements of both the small angle light scattering (SALS) structure factor and the dichroism for near-critical polymer solutions in electric fields. The theory of flow birefringence and dichroism proposed by Onuki and Doi is extended to the electric field case. This theory relates the electric-field-induced form dichroism to the second moment of the structure factor. Excellent agreement is observed between the form dichroism calculated from measured scattering intensities and the dichroism measured by optical polarimetry. In addition, a possible mechanism of dipolar coupling between the large critical concentration fluctuations and the electric field is proposed. Similar simultaneous SALS and birefringence measurements confirm this model of dipolar interaction.

AB - We present simultaneous measurements of both the small angle light scattering (SALS) structure factor and the dichroism for near-critical polymer solutions in electric fields. The theory of flow birefringence and dichroism proposed by Onuki and Doi is extended to the electric field case. This theory relates the electric-field-induced form dichroism to the second moment of the structure factor. Excellent agreement is observed between the form dichroism calculated from measured scattering intensities and the dichroism measured by optical polarimetry. In addition, a possible mechanism of dipolar coupling between the large critical concentration fluctuations and the electric field is proposed. Similar simultaneous SALS and birefringence measurements confirm this model of dipolar interaction.

UR - http://www.scopus.com/inward/record.url?scp=0001021647&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001021647&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001021647

VL - 101

SP - 1679

EP - 1686

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

IS - 2

ER -