• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

The Study on Crystallization Behavior of Bacterially Synthesized Copolyesters by High-Resolution Solid-State NMR

Research Project

Project/Area Number 06651043
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 高分子構造・物性(含繊維)
Research InstitutionTokyo Institute of Technology

Principal Investigator

INOUE Yoshio  Tokyo Inst.Technol., Facul.Biosci.Biotechnol., Prof., 生命理工学部, 教授 (60016649)

Co-Investigator(Kenkyū-buntansha) YOSHIE Naoko  Tokyo Inst.Technol., Facul.Biosci.Biotechnol., Assistant, 生命理工学部, 助手 (20224678)
SAKURAI Minoru  Tokyo Inst.Technol., Facul.Biosci.Biotechnol., Assoc.Prof, 生命理工学部, 助教授 (50162342)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1995: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1994: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsSolid State NMR / Polymer Crystal / Biodegadable Polymer / Copolyester / Copolymer / 固体NMR
Research Abstract

In this study, composition dependence of crystallization behavior of some bacterial copolyesters has been studied by high-resolution solid state C-13 NMR,DSC,and polarized microscopy.
The crystalline states of bacterial poly (3-hydroxybutyrate-co-4-hydroxybutyrate) (P3HB-4HB) with a wide range of 4HB contents were investigated. It was demostrated that P3HB-4HB can not form isomorphic crystals because of the extent of the structural difference between the 3HB and 4HB units.
Crystal isomorphism of chemically synthesized poly (ethylene terephthalate-co-1,4-cyclohexenedimethylene terephthalate) (PET-CHT) was analyzed. It was found that cocrystallization of the both monomer units is realized to some extent for the copolymers with high CHT unit content.
The composion distribution of bacterial poly (3-hydroxybutyrate-co-3-hydroxyvalerate) was found to be extremely broad and it attects significantly the crystallization behavior.
The solid state structure of bacterial poly (3-hydroxybutyrate-co-3-hydroxypropionate) (P3HB-3HP) with 3HP content ranged from 0 to 37mol% was also studied. It was found that the crystalline region was composed of only the 3HB unit, suggesting that the cocrystallization does not occur in P3HB-3HP.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Kazuhiro NAKAMURA: "A Structural Study on the Crystalline State of Bacterial Copolyester Poly (3-hydroxybutyrate-co-4-hvdroxybutvrate)" Polymer. 35. 193-197 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Naoko YOSHIE: "NMR Study on Isomorphous Behavior in Random Copolyesters : Poly- (ethyleneterephthalate-co-1,4-cyclohexylenedimethyleneterephthalate)" Polymer. 35. 1931-1935 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Naoko YOSHIE: "Complex Composition Distribution of Poly (3-hydroxybutyrate-co-3-hydroxyvalerate)" Macromolecules. 28. 6516-6521 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Masafumi ICHIKAWA: "Morphological Study of Bacterial Poly (3-hydroxybutyrate-co-3-hydroxpropionate)" Macromol.Chem.Phys.(印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Kazuhiro NAKAMURA: "A Structural Study on the Crystalline State of Bacterial Copolyester Poly (3-hydroxybutyrate-co-4-hydroxybutyrate)" POLYMER. Vol.35. 193-197 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Naoko YOSHIE: "NMR Study on Isomorphous Behavior in Random Copolyesters : Poly (ethyleneterephthalate-co-1,4-cyclohexyl-enedimethylene terephthalate)" POLYMER. Vol.35. 1931-1935 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Naoko YOSHIE: "Complex Composition Distrubution of Poly (3-hydroxybutyrate-co-3-hydroxyalerate)" MACROMOLECULES. Vol.28. 6516-6521 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Masafumi ICHIKAWA: "Morphological Study of Bacterial Poly (3-hydroxybutyrate-co-3-hydroxypropionate)" Macromol.Chem.Phys.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Naoko YOSHIE: "Complex Composition Distribution of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate)" Macromolecules. 28. 6516-6521 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Masafumi ICHIKAWA: "Morphological Study of Bacterial Poly(3-hydroxybutrate-co-3-hydroxypropionate)" Macromol. Chem. Phys.(印刷中).

    • Related Report
      1995 Annual Research Report
  • [Publications] Kazuhiro Nakamura: "A Structural Study on the Crystalline State of Bacterial Copolyester Poly(3-hydroxybutyrate-co-4-hydroxyralerate)" POLYMER. 35. 193-197 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Hidenori Satoh: "Hydrolytic Degradation of Blends of Poly(3-hydroxybutyrate)with Poly(3-hydroxybutyrate-co-3-hydroxybutyrate)" POLYMER. 35. 286-290 (1994)

    • Related Report
      1994 Annual Research Report

URL: 

Published: 1994-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi