Study of polyvinylpyrrolidone-C60 complex in water solution by neutron and light scattering and viscosimetry

V. T. Lebedev, G. A. Evmenenko, V. L. Alexeev, D. N. Orlova, Gy Torok, L. Cser, V. N. Zgonnik, L. V. Vinogradova, E. Yu Melelevskaya, E. E. Kever, V. P. Budtov, A. A. Polyakov, V. V. Klyubin, A. I. Sibilev, M. A. Sibileva

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Abstract

We have investigated the PVP+C60 complexes with different methods at various environments (H2O/D2O solution and bulk), to solve the nature of polymer fullerene interaction. The DSC measurements in the bulk material of PVP have proved that doping approximately 1% of C60 yields a higher thermal stability of polymer. We observed that in the solutions of complexes, comparing with pure PVP, the intrinsic viscosity [Δη]/[η]≈20% is risen up as well as the dynamic light scattering have shown the gaussian coils (diameter approximately 10 nm) and the associates (diam. approximately 200 nm). It is consistent with neutron data. In the PVP solution (3% w. of polymer in D2O) the scattered intensity I(q) can be described by Zimm function: I(q) = I0/(1+q2r∞2) with correlation radius: r∞ = 2.2±0.1 nm, whereas in the solution of PVP+C60 complex the`bimodal' distribution is observed: I(q) = IL/(1+q2rL2)+IH/(1+q2RH2) with rL = 1.2±0.1 nm and RH = 40.3±9.7 nm. The further analysis of PVP+C60 complexes behaviour allows us to conclude the formation of molecular associates (approximately 100 PVP chains) which macromolecules should `screen' the highly hydrophobic fullerene molecules in aqueous solution.

Original languageEnglish
Pages (from-to)II/-
JournalMaterials Science Forum
Volume321
Publication statusPublished - Jan 1 2000
EventProceedings of the 1998 6th European Powder Diffraction Conference (EPDIC 6) - Budapest, Hung
Duration: Aug 22 1998Aug 25 1998

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ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Lebedev, V. T., Evmenenko, G. A., Alexeev, V. L., Orlova, D. N., Torok, G., Cser, L., Zgonnik, V. N., Vinogradova, L. V., Melelevskaya, E. Y., Kever, E. E., Budtov, V. P., Polyakov, A. A., Klyubin, V. V., Sibilev, A. I., & Sibileva, M. A. (2000). Study of polyvinylpyrrolidone-C60 complex in water solution by neutron and light scattering and viscosimetry. Materials Science Forum, 321, II/-.