Chain confinement effects on interdiffusion in polymer multilayers

E. Sivaniah; M. Sferrazza; R. A L Jones; D. G. Bucknall

Chain confinement effects on interdiffusion in polymer multilayers

E. Sivaniah^*, M. Sferrazza, R. A L Jones, D. G. Bucknall

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

We have measured interdiffusion in polystyrene on length scales approaching and below the overall dimensions of the polymer molecules, by using neutron reflectometry to follow the relaxation of the composition modulation in an isotopic polymer multilayer. After an initial transient, relaxation of the composition modulation is diffusive, even for times less than the reptation time. The diffusion coefficient decreases with increasing wave vector, in qualitative, but not quantitative, accord with theory.

Original language	English
Pages (from-to)	885-888
Number of pages	4
Journal	Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume	59
Issue number	1
Publication status	Published - 1999

ASJC Scopus subject areas

Mathematical Physics
General Physics and Astronomy
Condensed Matter Physics
Statistical and Nonlinear Physics

Cite this

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title = "Chain confinement effects on interdiffusion in polymer multilayers",

abstract = "We have measured interdiffusion in polystyrene on length scales approaching and below the overall dimensions of the polymer molecules, by using neutron reflectometry to follow the relaxation of the composition modulation in an isotopic polymer multilayer. After an initial transient, relaxation of the composition modulation is diffusive, even for times less than the reptation time. The diffusion coefficient decreases with increasing wave vector, in qualitative, but not quantitative, accord with theory.",

author = "E. Sivaniah and M. Sferrazza and Jones, {R. A L} and Bucknall, {D. G.}",

year = "1999",

language = "English",

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pages = "885--888",

journal = "Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics",

issn = "1063-651X",

publisher = "American Physical Society",

number = "1",

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T1 - Chain confinement effects on interdiffusion in polymer multilayers

AU - Sivaniah, E.

AU - Sferrazza, M.

AU - Jones, R. A L

AU - Bucknall, D. G.

PY - 1999

Y1 - 1999

N2 - We have measured interdiffusion in polystyrene on length scales approaching and below the overall dimensions of the polymer molecules, by using neutron reflectometry to follow the relaxation of the composition modulation in an isotopic polymer multilayer. After an initial transient, relaxation of the composition modulation is diffusive, even for times less than the reptation time. The diffusion coefficient decreases with increasing wave vector, in qualitative, but not quantitative, accord with theory.

AB - We have measured interdiffusion in polystyrene on length scales approaching and below the overall dimensions of the polymer molecules, by using neutron reflectometry to follow the relaxation of the composition modulation in an isotopic polymer multilayer. After an initial transient, relaxation of the composition modulation is diffusive, even for times less than the reptation time. The diffusion coefficient decreases with increasing wave vector, in qualitative, but not quantitative, accord with theory.

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M3 - Article

AN - SCOPUS:0000961537

SN - 1063-651X

VL - 59

SP - 885

EP - 888

JO - Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

JF - Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

IS - 1

ER -

Chain confinement effects on interdiffusion in polymer multilayers

Abstract

ASJC Scopus subject areas

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