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

Research output: Contribution to journalArticlepeer-review

12 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 languageEnglish (US)
Pages (from-to)3413-3420
Number of pages8
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume43
Issue number23
DOIs
StatePublished - 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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