Static and dynamic crossover in a critical polymer mixture

Frank S. Bates; Jeffrey H. Rosedale; Petr Stepanek; Timothy P. Lodge; Pierre Wiltzius; Glenn H. Fredrickson; Rex P. Hjelm

doi:10.1103/PhysRevLett.65.1893

Static and dynamic crossover in a critical polymer mixture

Frank S. Bates, Jeffrey H. Rosedale, Petr Stepanek, Timothy P. Lodge, Pierre Wiltzius, Glenn H. Fredrickson, Rex P. Hjelm

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137 Scopus citations

Abstract

A model low-molecular-weight polymer mixture was studied as a function of temperature near the critical point by small-angle neutron scattering (SANS) and dynamic light scattering (DLS). SANS measurements reveal a crossover in the static susceptibility from mean-field to non-mean-field behavior at TxTc+30°C, in quantitative agreement with the Ginzburg criterion. This crossover behavior is also reflected in the DLS experiments, which reveal mode-coupled critical dynamics far into the mean-field regime.

Original language	English (US)
Pages (from-to)	1893-1896
Number of pages	4
Journal	Physical review letters
Volume	65
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.65.1893
State	Published - 1990

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abstract = "A model low-molecular-weight polymer mixture was studied as a function of temperature near the critical point by small-angle neutron scattering (SANS) and dynamic light scattering (DLS). SANS measurements reveal a crossover in the static susceptibility from mean-field to non-mean-field behavior at TxTc+30°C, in quantitative agreement with the Ginzburg criterion. This crossover behavior is also reflected in the DLS experiments, which reveal mode-coupled critical dynamics far into the mean-field regime.",

author = "Bates, {Frank S.} and Rosedale, {Jeffrey H.} and Petr Stepanek and Lodge, {Timothy P.} and Pierre Wiltzius and Fredrickson, {Glenn H.} and Hjelm, {Rex P.}",

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doi = "10.1103/PhysRevLett.65.1893",

language = "English (US)",

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T1 - Static and dynamic crossover in a critical polymer mixture

AU - Bates, Frank S.

AU - Rosedale, Jeffrey H.

AU - Stepanek, Petr

AU - Lodge, Timothy P.

AU - Wiltzius, Pierre

AU - Fredrickson, Glenn H.

AU - Hjelm, Rex P.

PY - 1990

Y1 - 1990

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AB - A model low-molecular-weight polymer mixture was studied as a function of temperature near the critical point by small-angle neutron scattering (SANS) and dynamic light scattering (DLS). SANS measurements reveal a crossover in the static susceptibility from mean-field to non-mean-field behavior at TxTc+30°C, in quantitative agreement with the Ginzburg criterion. This crossover behavior is also reflected in the DLS experiments, which reveal mode-coupled critical dynamics far into the mean-field regime.

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EP - 1896

JO - Physical review letters

JF - Physical review letters

IS - 15

ER -

Static and dynamic crossover in a critical polymer mixture

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