Anisotropic frequency response of critical density fluctuation of NIPA gel under oscillation shear

Masaaki Sugiyama; Martin E. Vigild; Toshiharu Fukunaga; Keiji Itoh; Kazuhiro Mori; Takashi Sato; Masahiko Annaka

doi:10.1016/j.physb.2006.06.094

Anisotropic frequency response of critical density fluctuation of NIPA gel under oscillation shear

Masaaki Sugiyama, Martin E. Vigild, Toshiharu Fukunaga, Keiji Itoh, Kazuhiro Mori, Takashi Sato, Masahiko Annaka

Physical Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

A relation between rheology and structure of high density NIPA gel around a critical point on volume phase transition was studied by a simultaneous rheology and small-angle neutron scattering measurement. Just below the critical temperature, the NIPA gel showed softening: G^′ and G^″ get closer (G^′ > G^″). At this temperature, the density fluctuation enhanced along the shear direction corresponding to the shear frequency but not to the shear strength. It means that this anisotropy is different from that observed in a statically stretched gel.

Original language	English
Pages (from-to)	804-806
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	385-386 I
DOIs	https://doi.org/10.1016/j.physb.2006.06.094
Publication status	Published - Nov 27 2006

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2006.06.094

Cite this

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title = "Anisotropic frequency response of critical density fluctuation of NIPA gel under oscillation shear",

abstract = "A relation between rheology and structure of high density NIPA gel around a critical point on volume phase transition was studied by a simultaneous rheology and small-angle neutron scattering measurement. Just below the critical temperature, the NIPA gel showed softening: G′ and G″ get closer (G′ > G″). At this temperature, the density fluctuation enhanced along the shear direction corresponding to the shear frequency but not to the shear strength. It means that this anisotropy is different from that observed in a statically stretched gel.",

author = "Masaaki Sugiyama and Vigild, {Martin E.} and Toshiharu Fukunaga and Keiji Itoh and Kazuhiro Mori and Takashi Sato and Masahiko Annaka",

note = "Funding Information: This work is partially supported by Creative Scientific Research (No. 16GS0417), Grant-in-Aid for Scientific Research, Ministry of Education, Culture, Sports, Science and Technology. The SANS experiments in KURRI were performed under Contract no. 15033 and no. 16055.",

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doi = "10.1016/j.physb.2006.06.094",

language = "English",

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journal = "Physica B: Condensed Matter",

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T1 - Anisotropic frequency response of critical density fluctuation of NIPA gel under oscillation shear

AU - Sugiyama, Masaaki

AU - Vigild, Martin E.

AU - Fukunaga, Toshiharu

AU - Itoh, Keiji

AU - Mori, Kazuhiro

AU - Sato, Takashi

AU - Annaka, Masahiko

N1 - Funding Information: This work is partially supported by Creative Scientific Research (No. 16GS0417), Grant-in-Aid for Scientific Research, Ministry of Education, Culture, Sports, Science and Technology. The SANS experiments in KURRI were performed under Contract no. 15033 and no. 16055.

PY - 2006/11/27

Y1 - 2006/11/27

N2 - A relation between rheology and structure of high density NIPA gel around a critical point on volume phase transition was studied by a simultaneous rheology and small-angle neutron scattering measurement. Just below the critical temperature, the NIPA gel showed softening: G′ and G″ get closer (G′ > G″). At this temperature, the density fluctuation enhanced along the shear direction corresponding to the shear frequency but not to the shear strength. It means that this anisotropy is different from that observed in a statically stretched gel.

AB - A relation between rheology and structure of high density NIPA gel around a critical point on volume phase transition was studied by a simultaneous rheology and small-angle neutron scattering measurement. Just below the critical temperature, the NIPA gel showed softening: G′ and G″ get closer (G′ > G″). At this temperature, the density fluctuation enhanced along the shear direction corresponding to the shear frequency but not to the shear strength. It means that this anisotropy is different from that observed in a statically stretched gel.

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Anisotropic frequency response of critical density fluctuation of NIPA gel under oscillation shear

Abstract

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