Neutron study of fullerene-containing polymers

Gy Török, V. T. Lebedev, V. A. Bershtein, V. N. Zgonnik

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2 Citations (Scopus)

Abstract

Star-shaped poly(styrene) (PS), grafted to fullerene C60, have been studied in solutions and in the bulk as compared to linear polymers by small-angle neutron scattering (SANS) and neutron spin-echo (NSE). In different surroundings the radius of stars is close to the end-to-end distance of their arms, i.e. the arms are not condensed at the fullerene surface, spreading away from the C60-core. In bulky stars below the glass transition (T(G)∼94 °C), the interaction of arms with the fullerene slows down the γ-relaxation in arms at T=-20-+70 °C <TG, and their relaxation time becomes longer than in free PS chains. Together with slow processes in stars and PS, we observed a fast oscillations (periods ∼1 ns) of correlation function. The dynamic model of stretched oscillations is discussed.

Original languageEnglish
Pages (from-to)705-711
Number of pages7
JournalJournal of Non-Crystalline Solids
Volume307-310
DOIs
Publication statusPublished - Sep 1 2002

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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