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

14 Scopus citations


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
Issue number23
StatePublished - Dec 1 2005


  • 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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