Steady-shear rheology of block copolymer melts and concentrated solutions: Defect-mediated flow at low stresses in body-centered-cubic systems

John M. Sebastian; William W. Graessley; Richard A. Register

doi:10.1122/1.1475979

Steady-shear rheology of block copolymer melts and concentrated solutions: Defect-mediated flow at low stresses in body-centered-cubic systems

John M. Sebastian
, William W. Graessley
, Richard A. Register

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

41 Scopus citations

Abstract

The steady-shear and dynamic viscoelastic response at low deformation rates was studied for bcc-forming block copolymer melts and concentrated solutions of various chemistries, architectures, and molecular weights. Polystyrene-polyisoprene and polystyrene-poly(ethylene-alt-propylene) diblock, triblock, and polycrystalline bcc mesophase were considered as samples. Data were explained upon analogies with defect-mediated creep in other solids.

Original language	English (US)
Pages (from-to)	863-879
Number of pages	17
Journal	Journal of Rheology
Volume	46
Issue number	4
DOIs	https://doi.org/10.1122/1.1475979
State	Published - Jul 2002

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "The steady-shear and dynamic viscoelastic response at low deformation rates was studied for bcc-forming block copolymer melts and concentrated solutions of various chemistries, architectures, and molecular weights. Polystyrene-polyisoprene and polystyrene-poly(ethylene-alt-propylene) diblock, triblock, and polycrystalline bcc mesophase were considered as samples. Data were explained upon analogies with defect-mediated creep in other solids.",

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N2 - The steady-shear and dynamic viscoelastic response at low deformation rates was studied for bcc-forming block copolymer melts and concentrated solutions of various chemistries, architectures, and molecular weights. Polystyrene-polyisoprene and polystyrene-poly(ethylene-alt-propylene) diblock, triblock, and polycrystalline bcc mesophase were considered as samples. Data were explained upon analogies with defect-mediated creep in other solids.

AB - The steady-shear and dynamic viscoelastic response at low deformation rates was studied for bcc-forming block copolymer melts and concentrated solutions of various chemistries, architectures, and molecular weights. Polystyrene-polyisoprene and polystyrene-poly(ethylene-alt-propylene) diblock, triblock, and polycrystalline bcc mesophase were considered as samples. Data were explained upon analogies with defect-mediated creep in other solids.

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Steady-shear rheology of block copolymer melts and concentrated solutions: Defect-mediated flow at low stresses in body-centered-cubic systems

Abstract

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