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Efficient Utilization of Ozonized Lignin

Research Project

Project/Area Number 08556025
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 林産学
Research InstitutionUniversity of Tsukuba

Principal Investigator

TOMITA Bunichiro  University of Tsukuba, Institute of Agricultural and Forest Engineering, Professor, 農林工学系, 教授 (40012075)

Co-Investigator(Kenkyū-buntansha) KAJIYAMA Mikio  University of Tokyo, Graduate School of Agricultural and Life Science, Research, 大学院・農学生命科学研究科, 助手 (40191978)
TAKEMURA Akio  University of Tokyo, Graduate School of Agricultural and Life Science, Research, 大学院・農学生命科学研究科, 助手 (50183455)
OHI Hiroshi  University of Tsukuba, Institute of Agricultural and Forest Engineering, Assista, 農林工学系, 講師 (20201965)
KURODA Kenichi  University of Tsukuba, Institute of Agricultural and Forest Engineering, Profess, 農林工学系, 教授 (80015908)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥13,100,000 (Direct Cost: ¥13,100,000)
Fiscal Year 1997: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1996: ¥9,600,000 (Direct Cost: ¥9,600,000)
Keywordslignin / ozonization / water-soluble epoxy / viscoelastic property / glass transition / polymerization / resinification
Research Abstract

A new resin system was developed only by mixing the alkaline solution of industrial lignin or its ozonized products with water soluble epoxy compound, polyethylene glycol diglycidyl ether (PRGDGE), and curing reagent. The lignin/epoxy resins were synthesized by alternation the blend ratio or their chemical structure. The viscoelastic properties of cured resin films were investigated.
As the content of the kraft lignin in the resins increased, the absorption peak due to the glass transition for cured resins shifted to a higher temperature with spreading. It was found that the grass transition of cured resins can be modified by changing kinds of PEGDGE and curing reagents. Addition of the emulsion type of diglycidyl ether of bisphenol A (DGEBA) to the blendings also could make the grass transition temperature of cured resins higher. Since only one broad dispersion peak due to the grass transition could be observed, it was suggested that the cured resins had compatibility to form a kind of IPNs (Interpenetrating Polymer Networks).
The possibility of application of these resins to damping materials and adhesives was strongly suggested, since they had a large secondary relaxation peak at lower temperature. The effect of ozone-treatment on mechanical properties of cured resins was not obvious.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Nonaka, Yuji: "Synthesis of Lignin/Epoxy Resins in Aqueous Systems and Their Properties" Holz Forschung. 51巻2号. 183-187 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Izumi, Akiko: "Pyrolysis-Gas Chromatography Analysis of Dehydrogenation Polymers with Various Syringyl/Guaiacyl Ratios" Mokuzai Gakkaishi. 43巻3号. 194-202 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Izumi, Akiko: "Pyrolysis-Mass Spectrometry Analysis of Dehydration Lignin Polymers with Various Syringyl/Guaiacyl Ratios" Rapid Commun.Mass Spectrom.11巻. 1709-1715 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Yuji NONAKA: "Synthesis of Lignin/Epoxy Resins in Aqueous Systems and Their Properties" Holz Forschung. 51 (2). 183-187 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Akiko IZUMI: "Pyrolysis-Gas Chromatography Analysis of Dehydrogenation Polymers with Various Syringyl/Guaiacyl Ratios" Mokuzai Gakkaishi. 43 (3). 194-202 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Akiko IZUMI: "Pyrolysis-Mass Spectrometry Analysis of Dehydration Lignin Polymers with Various Syringyl/Guaiacyl Ratios" Rapid Commun.Mass Spectrom.11. 1709-1715 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Nonaka,Yuji: "Synthesis of Lignin/Epoxy Resins in Aqueous Systems and Their Properties" Holz Forschung. 51巻・2号. 183-187 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Izumi,Akiko: "Pyrolysis-Gas Chromatography Analysis of Dehydrogenation Polymers with Various Syringyl/Guaiacyl Ratios" Mokuzai Gakkaishi. 43巻・3号. 194-202 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Izumi,Akiko: "Pyrolysis-Mass Spectrometry Analysis of Dehydration Lignin Polymers with Various Syringyl/Guaiacyl Ratios" Rapid Commun.Mass Spectrom.11巻. 1709-1715 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 野中 裕史: "リグニン/エポキシ樹脂の物性と接着性" 木材工業. 51巻6号. 250-254 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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