Analysis of Solution Properties of Polystyrene in 2-Butanone in the Framework of the Hard-Sphere Model

Michael E. Lewis; Shouyan Nan; Wan Yunan; Jianbo Li; Jimmy W. Mays; Nikos Hadjichristidis

doi:10.1021/ma00025a020

Analysis of Solution Properties of Polystyrene in 2-Butanone in the Framework of the Hard-Sphere Model

Michael E. Lewis, Shouyan Nan, Wan Yunan, Jianbo Li, Jimmy W. Mays^*, Nikos Hadjichristidis

^*Corresponding author for this work

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

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Abstract

The hydrodynamic properties of near-monodisperse polystyrene (PS) in 2-butanone have been studied by photon-correlation spectroscopy and viscometry. The derived translational diffusion coefficients D₀ and intrinsic viscosities [η], along with literature data for the second virial coefficient A₂, have been used to calculate the corresponding equivalent sphere radii: R_h, R_v, and R_t (hydrodynamic, viscometric, and thermodynamic radii, respectively). Various ratios of these radii and ratios of the equivalent sphere radii with the radius of gyration R_g have been used to test theoretical predictions of dilute-solution behavior for linear chains. Of particular note is the observed strong variation of the ratio R_v/R_H with the specific nature of the polymer/solvent system. We tentatively attribute this behavior to crossover effects and, possibly, to changes in the average shape of the chain (from more spherical to more elliptical) brought about by specific polymer-solvent interactions.

Original language	English (US)
Pages (from-to)	6686-6689
Number of pages	4
Journal	Macromolecules
Volume	24
Issue number	25
DOIs	https://doi.org/10.1021/ma00025a020
State	Published - Dec 1 1991
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Analysis of Solution Properties of Polystyrene in 2-Butanone in the Framework of the Hard-Sphere Model",

abstract = "The hydrodynamic properties of near-monodisperse polystyrene (PS) in 2-butanone have been studied by photon-correlation spectroscopy and viscometry. The derived translational diffusion coefficients D0 and intrinsic viscosities [η], along with literature data for the second virial coefficient A2, have been used to calculate the corresponding equivalent sphere radii: Rh, Rv, and Rt (hydrodynamic, viscometric, and thermodynamic radii, respectively). Various ratios of these radii and ratios of the equivalent sphere radii with the radius of gyration Rg have been used to test theoretical predictions of dilute-solution behavior for linear chains. Of particular note is the observed strong variation of the ratio Rv/RH with the specific nature of the polymer/solvent system. We tentatively attribute this behavior to crossover effects and, possibly, to changes in the average shape of the chain (from more spherical to more elliptical) brought about by specific polymer-solvent interactions.",

author = "Lewis, {Michael E.} and Shouyan Nan and Wan Yunan and Jianbo Li and Mays, {Jimmy W.} and Nikos Hadjichristidis",

year = "1991",

month = dec,

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doi = "10.1021/ma00025a020",

language = "English (US)",

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T1 - Analysis of Solution Properties of Polystyrene in 2-Butanone in the Framework of the Hard-Sphere Model

AU - Lewis, Michael E.

AU - Nan, Shouyan

AU - Yunan, Wan

AU - Li, Jianbo

AU - Mays, Jimmy W.

AU - Hadjichristidis, Nikos

PY - 1991/12/1

Y1 - 1991/12/1

N2 - The hydrodynamic properties of near-monodisperse polystyrene (PS) in 2-butanone have been studied by photon-correlation spectroscopy and viscometry. The derived translational diffusion coefficients D0 and intrinsic viscosities [η], along with literature data for the second virial coefficient A2, have been used to calculate the corresponding equivalent sphere radii: Rh, Rv, and Rt (hydrodynamic, viscometric, and thermodynamic radii, respectively). Various ratios of these radii and ratios of the equivalent sphere radii with the radius of gyration Rg have been used to test theoretical predictions of dilute-solution behavior for linear chains. Of particular note is the observed strong variation of the ratio Rv/RH with the specific nature of the polymer/solvent system. We tentatively attribute this behavior to crossover effects and, possibly, to changes in the average shape of the chain (from more spherical to more elliptical) brought about by specific polymer-solvent interactions.

AB - The hydrodynamic properties of near-monodisperse polystyrene (PS) in 2-butanone have been studied by photon-correlation spectroscopy and viscometry. The derived translational diffusion coefficients D0 and intrinsic viscosities [η], along with literature data for the second virial coefficient A2, have been used to calculate the corresponding equivalent sphere radii: Rh, Rv, and Rt (hydrodynamic, viscometric, and thermodynamic radii, respectively). Various ratios of these radii and ratios of the equivalent sphere radii with the radius of gyration Rg have been used to test theoretical predictions of dilute-solution behavior for linear chains. Of particular note is the observed strong variation of the ratio Rv/RH with the specific nature of the polymer/solvent system. We tentatively attribute this behavior to crossover effects and, possibly, to changes in the average shape of the chain (from more spherical to more elliptical) brought about by specific polymer-solvent interactions.

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Analysis of Solution Properties of Polystyrene in 2-Butanone in the Framework of the Hard-Sphere Model

Abstract

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