Porod scattering study of coarsening in immiscible polymer blends

Kristin L. Brinker; Andrew H. Lebovitz; John M. Torkelson; Wesley R. Burghardt

doi:10.1002/polb.20648

Porod scattering study of coarsening in immiscible polymer blends

Kristin L. Brinker, Andrew H. Lebovitz, John M. Torkelson, Wesley R. Burghardt^*

^*Corresponding author for this work

Chemical and Biological Engineering

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

14 Scopus citations

Abstract

Studies of immiscible blend compatibilization often involve laborious microscopy methods to characterize changes in the particle size distribution with time in the melt. Here we explore a simple alternative approach based on Porod scattering from the two-phase structure. Although micron-sized particles in immiscible polymer blends are too large to be fully characterized by small-angle scattering, Porod scattering measurements of the interfacial area combined with knowledge of the blend volume fraction allows determination of an average particle diameter from a single scattering measurement. This technique is illustrated in experiments monitoring coarsening of particle size in polystyrene/poly(methyl methacrylate) blends prepared either by melt blending or solid-state shear pulverization.

Original language	English (US)
Pages (from-to)	3413-3420
Number of pages	8
Journal	Journal of Polymer Science, Part B: Polymer Physics
Volume	43
Issue number	23
DOIs	https://doi.org/10.1002/polb.20648
State	Published - Dec 1 2005

Keywords

Blends
Electron microscopy
Interfaces
SAXS
SEM
Solid-state shear pulverization

ASJC Scopus subject areas

Condensed Matter Physics
Physical and Theoretical Chemistry
Polymers and Plastics
Materials Chemistry

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10.1002/polb.20648

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abstract = "Studies of immiscible blend compatibilization often involve laborious microscopy methods to characterize changes in the particle size distribution with time in the melt. Here we explore a simple alternative approach based on Porod scattering from the two-phase structure. Although micron-sized particles in immiscible polymer blends are too large to be fully characterized by small-angle scattering, Porod scattering measurements of the interfacial area combined with knowledge of the blend volume fraction allows determination of an average particle diameter from a single scattering measurement. This technique is illustrated in experiments monitoring coarsening of particle size in polystyrene/poly(methyl methacrylate) blends prepared either by melt blending or solid-state shear pulverization.",

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AU - Brinker, Kristin L.

AU - Lebovitz, Andrew H.

AU - Torkelson, John M.

AU - Burghardt, Wesley R.

PY - 2005/12/1

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N2 - Studies of immiscible blend compatibilization often involve laborious microscopy methods to characterize changes in the particle size distribution with time in the melt. Here we explore a simple alternative approach based on Porod scattering from the two-phase structure. Although micron-sized particles in immiscible polymer blends are too large to be fully characterized by small-angle scattering, Porod scattering measurements of the interfacial area combined with knowledge of the blend volume fraction allows determination of an average particle diameter from a single scattering measurement. This technique is illustrated in experiments monitoring coarsening of particle size in polystyrene/poly(methyl methacrylate) blends prepared either by melt blending or solid-state shear pulverization.

AB - Studies of immiscible blend compatibilization often involve laborious microscopy methods to characterize changes in the particle size distribution with time in the melt. Here we explore a simple alternative approach based on Porod scattering from the two-phase structure. Although micron-sized particles in immiscible polymer blends are too large to be fully characterized by small-angle scattering, Porod scattering measurements of the interfacial area combined with knowledge of the blend volume fraction allows determination of an average particle diameter from a single scattering measurement. This technique is illustrated in experiments monitoring coarsening of particle size in polystyrene/poly(methyl methacrylate) blends prepared either by melt blending or solid-state shear pulverization.

KW - Blends

KW - Electron microscopy

KW - Interfaces

KW - SAXS

KW - SEM

KW - Solid-state shear pulverization

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Porod scattering study of coarsening in immiscible polymer blends

Abstract

Keywords

ASJC Scopus subject areas

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