Small-angle neutron scattering study on charged gels in deformed state

Mitsuhiro Shibayama, Kazuki Kawakubo, Fumiyoshi Ikkai, Masayuki Imai

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

The structure of weakly charged temperature sensitive gels has been investigated in deformed state by means of small-angle neutron scattering (SANS). At low temperatures where the gel is in a good solvent, the scattered intensity pattern was isotropic even for deformed gels. When the temperature was raised to 42 °C, the so-called butterfly pattern, i.e., a prolate-shaped scattered intensity pattern with respect to the stretching direction, appeared in the deformed gels. With a further increase in temperature to 46 °C, a scattering maximum was observed. In the case of undeformed gel, the scattering pattern had a circular maximum with q = qm, where q is the magnitude of the scattering vector and qm is the q value at the scattering maximum. On the other hand, the scattering pattern became oblate for the deformed gel, i.e., qm,y < qm,x, where the subscripts y and x indicate the stretching and perpendicular directions, respectively. These changes of the SANS intensity patterns are discussed by decomposing it into the thermal fluctuations and the static inhomogeneities.

Original languageEnglish
Pages (from-to)2586-2592
Number of pages7
JournalMacromolecules
Volume31
Issue number8
DOIs
Publication statusPublished - 1998 Apr 21
Externally publishedYes

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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