Topological transition and electrorheological effect in immiscible polymer blends

2008 Fiscal Year Self-evaluation Report

• Project Area: Creation of non-equilibrium soft matter physics: Structure and dynamics of mesoscopic systems
• Project/Area Number: 18068001
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Hokkaido University
• Principal Investigator: ORIHARA Hiroshi Hokkaido University, 大学院・工学研究科, 教授 (30177307)
• Project Period (FY): 2006 – 2010
• Keywords: レオロジー / トポロジー / 電気粘性 / 高分子ブレンド / 共焦点レーザー顕微鏡 / 液晶 / モルホロジー / 界面

Research Abstract

ソフトマターはその柔軟性のために外場(電場、磁場、流動場)により容易に大変形が起こり、その結果として粘弾性等に劇的な物性変化が生じるため、応用上も重要である。例えば、互いに相溶しない2種類の流体を混合すると単一の流体には無い新たなレオロジー的性質が現れることが古くから知られている。本研究では、流動および電場下においてソフトマター(主に非相溶高分子ブレンドと液晶)の3次元動的構造観察とレオロジー測定が同時にできるシステムを構築し、非平衡系における構造とレオロジーの関係、さらに転移機構を明らかにする。

Research Products

• [Journal Article] Stripe Formation in an Immiscible Polymer Blend under Electric and Shear-flow Fields (2008)
  • Author(s): Y. H. Na, T Shibuya, S. Ujiie, T. Nagaya, and H. Orihara
  • Journal Title: Phys. Rev. E Vol. 77 Pages: 041405-1-041405-4
  • Peer Reviewed
• [Journal Article] Scaling Properties of Immiscible Fluid Blends in Electric and Shear Flow Fields (2008)
  • Author(s): H. Orihara, K. Tanabu, and Y. H. Na
  • Journal Title: J. Phys. Soc. Jpn. Vol. 77 Pages: 093802-1-093802-4
  • Peer Reviewed
• [Journal Article] Phase Transitions in Ferroelectric and Antiferroelectric Liquid Crystals (2007)
  • Author(s): H. Orihara
  • Journal Title: Ferroelectrics Vol. 355 Pages: 19-27
  • Peer Reviewed
• [Journal Article] Topological Transition of an Immiscible Polymer Blend in Electric and Shear Flow Fields (2006)
  • Author(s): H. Orihara, T. Shibuya, T. Nagaya, and S. Ujiie
  • Journal Title: J. Phys. Soc. Jpn. Vol. 75 Pages: 063802-1-063802-4
  • Peer Reviewed
• [Journal Article] Liquid Crystalline Properties and Molecular Packing of Semifluorinated n-Alkanes F(CF2)10(CH2)mH (2006)
  • Author(s): M. Fujiwara, K. Satoh, S. Kondo, and S. Ujiie
  • Journal Title: Macromolecules Vol. 39 Pages: 5836-5842
  • Peer Reviewed
• [Presentation] Structural Changes and Rheological Characteristics of Immiscible Polymer Blends under Shear Flow and Electric Fields (2008)
  • Author(s): Y.H.Na, K.Tanabu, K.Aida, R.Sakai, T.Kakuchi, S.Ujiie, H.Orihara
  • Organizer: 42nd World Polymer Congress (Macro 2008)
  • Place of Presentation: Taipei, Taiwan
  • Year and Date: 20080629-20080704
• [Presentation] Chiral Liquid Crystalline Systems with Cholesteric and TGBA* Mesophases (2008)
  • Author(s): Y. Watanabe, T. Nonaka, H. Orihara, and S. Ujiie
  • Organizer: The 22nd International Liquid Crystal Conference
  • Place of Presentation: Korea, Jeju
  • Year and Date: 20080629-04
• [Presentation] Linear and Nonlinear Dielectric Responses in Low Temperature Region of MHPOCBC (2007)
  • Author(s): A.Fajar, H.Orihara
  • Organizer: 11th International Conference on Ferroelectric Liquid Crystals
  • Place of Presentation: Sapporo, Japan
  • Year and Date: 20070903-20070908
• [Presentation] Phase Transitions in Ferroelectric and Antiferroelectric Liquid Crystals (2006)
  • Author(s): H.Orihara
  • Organizer: The 5th Asian Meeting on Ferroelectrics
  • Place of Presentation: Noda, Japan
  • Year and Date: 20060903-20060907
• [Presentation] Synthesis and Orientational Behavior of Liquid Crystalline Polymers having Hydrophilic Units (2006)
  • Author(s): S. Ujiie
  • Organizer: 2006 the 10th INTERNATIONAL SYMPOSIUM On Advanced Display Materials and Devices
  • Place of Presentation: Kumamoto, Japan
  • Year and Date: 20060622-23
• [Remarks]
  • URL: http://softmatter.jp/index.htm