Complementary SAXS and SANS for structural characteristics of a polyurethethane elastomer of low hard-segment content

Ya Sen Sun, U. Ser Jeng, Yu San Huang, Keng S. Liang, Tsang Lang Lin, Cheng Si Tsao

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

A polyurethane (PU) elastomer film based on segmented poly(tetramethylene oxide) (PTMO) has been studied using wide-angle X-ray scattering (WAXS), and small-angle X-ray and neutron scattering (SAXS and SANS). The broad WAXS peaks measured for the PU elastomer reveal a low crystallinity of the soft segments PTMO and no crystalline domains for the hard segments, methylene bis(4-isocynatobenzene) (MDI), at 20 °C. Whereas small-angle scattering indicates the existence of hard-segment-rich aggregates. Using the contrast variation provided by the SANS and SAXS, we have extracted detailed structural information of the aggregates, including the shape, size, and the aggregation numbers.

Original languageEnglish
Pages (from-to)650-652
Number of pages3
JournalPhysica B: Condensed Matter
Volume385-386 I
DOIs
StatePublished - 27 Nov 2006

Keywords

  • Aggregation
  • Polyurethane
  • SAXS
  • SNAS

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