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Study on Control of Liquid Crystal formation for Optically Anisotropic Films Synthesized from Chitin

Research Project

Project/Area Number 16380219
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Boundary agriculture
Research InstitutionThe University of Tokyo

Principal Investigator

TAKEMURA Akio  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Associate Professor, 大学院・農学生命科学研究科, 助教授 (50183455)

Co-Investigator(Kenkyū-buntansha) ONO Hirokuni  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Professor, 大学院・農学生命科学研究科, 教授 (30261960)
HORI Naruhito  The University of Tokyo, Graduate School of Agricultural and Life Sciences, Assistant, 大学院・農学生命科学研究科, 助手 (80313071)
TOMITA Bunichiro  The University of Tsukuba, Institute of Agricultural and Forest Engineering, Professor, 農林工学系, 教授 (40012075)
HATANO Yasunori  Forestry and Forest Products Research Institute, Head, 複合研究室, 室長(研究職) (90353812)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥15,700,000 (Direct Cost: ¥15,700,000)
Fiscal Year 2005: ¥8,700,000 (Direct Cost: ¥8,700,000)
Fiscal Year 2004: ¥7,000,000 (Direct Cost: ¥7,000,000)
KeywordsChitin / Liquid Crystalline / Optically Anisotropic / 2D FT-IR / Hydrogen bonding
Research Abstract

From the previous our study, the following knowledge was obtained that microcrystalline chitin (MC), which is moderately hydrolyzed in aqueous hydrochloric acid, has NH3+ and shows chiral-nematic liquid crystalline structure in both aqueous suspension and including acrylic acid monomer, where isotropic, anisotropic and birefringence phases are found. The orientation was induced by placing in magnetic field or applying shear strength. The composite polymers made from the orientated suspension still had an orientation. From the polarized FT- IR analysis, glucose ring was orientating 90°, amide and NH groups were orientating 0° against magnetic field direction. When orientated by shear strength, glucose ring was orientating 0°, amide and NH groups were orientating 90° against shear direction, which was totally opposite when applying magnetic field.
The present study is focusing on controlling LC formation of the above synthesized composite. In the course of studying 2D FT-IR of composite, it is known that the chitin structure is changing with the increase of temperature. The 2D FT-IR spectrum of orientated LC film was investigated. We can observe the state of hydrogen bonding(HB) and the sequence of breaking HB occurred in the order of [O(6)H... O(6)] of intermolecular hydrogen bonding, and [O(6')H...O(7)], [O(3')H...O(5)] of intramolecular HB with the increase of temperature. These results corresponds with X ray diffraction analysis.
The structure of β chitin is similarly analyzed. It can be assigned that 3515 and 3376cm-1 are derived intermolecular HB of C(6)OH, 3342cm-1 the intramolecular HB of C(3)OH, 3617 and 1567cm-1 are due to free C(3)OH and C(6)OH, respectively.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (4 results)

All 2005

All Journal Article (4 results)

  • [Journal Article] Characterization of Uniaxially Aligned Chitin Film by 2D FT-IR Spectroscopy.2005

    • Author(s)
      山口寿, 竹村彰夫 他
    • Journal Title

      Biomacromolecules 6

      Pages: 1941-1947

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Characterization of Uniaxially Aligned Chitin Film by 2D FT-IR Spectroscopy.2005

    • Author(s)
      Yoshimi Yamaguchi, Akio Takemura et al.
    • Journal Title

      Biomacromolecules vol 6

      Pages: 1941-1947

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Characterization of Uniaxially Aligned Chitin Film by 2D FT-IR Spectroscopy.2005

    • Author(s)
      山口 寿, 竹村 彰夫, 他
    • Journal Title

      Biomacromolecules 6

      Pages: 1941-1947

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Characterization of Liquid Crystalline Chitin by 2D FT-IR Spectroscopy2005

    • Author(s)
      山口寿, 竹村彰夫, 他
    • Journal Title

      Biomacromolecules (発表予定)

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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