Anisotropic Frequency Response of Critical Density Fluctuations of NIPA Gel under Oscillation Shear

M. Sugiyama, Martin Etchells Vigild, Toshiharu Fukunaga, Keiji Itoh, Kazuhiro Mori, Takashi Sato, Masahiko Annaka

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A relation between rheology and structure of high density NIPA gel around criticai point on volume phase transition was studied by a simultaneous rheology and smail-angle neutron scattering measuÆmeiit Just below the critical temperature, the NIPA gel showed softening: G’ and G” get doser (G’> G”). At this temperature, the density fluctuation enhanced along the shear direction corresponding to the shear frequency but not to the shear strength. Itrneàns that this anisotropy is different from that observed in a statically stretched gel.
Original languageEnglish
JournalPhysica B: Condensed Matter
Volume385
Pages (from-to)804-806
ISSN0921-4526
DOIs
Publication statusPublished - 2006

Keywords

  • SANS, NIPA gel, Anisotropy, Rheology

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