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Elucidation of Higher Order Structure of Coals from Their Viscoelasticity Behavior

Research Project

Project/Area Number 07455317
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 触媒・化学プロセス
Research InstitutionTohoku University

Principal Investigator

IINO Masashi  Institute for Chemical Reaction Science, Tohoku University, Professor, 反応化学研究所, 教授 (10006306)

Co-Investigator(Kenkyū-buntansha) TAKANOHASHI Toshimasa  Institute for Chemical Reaction Science, Tohoku University, Research Associate, 反応化学研究所, 助手 (30197123)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1996: ¥600,000 (Direct Cost: ¥600,000)
KeywordsCoal / Higher Order Structure / Gel Film / Viscoelasticity / 架橋構造 / 石炭-溶媒ゲル膜 / 粘弾性挙動
Research Abstract

A large amount of solvent-soluble constituents of coals were mildly extracted with a carbon-disulfide-N-methyl-2-pyrrolidinone mixed solvent at room temperature. Various gel films containing a solvent was successfully prepared by using the solvent-soluble constituents and polar solvents such as N-Methyl-2-pyrrolidinone and N,N-dimethyl-formamide.
A thermomechanical analysis (TMA) of the gel films was carried out and the creep compliance behaviors of the gel films showed the viscoelastic properties, suggesting that the gel films have higher order structure which mainly consist of physical cross-linked networks through coal-coal interaction and coal-solvent interaction, since the solvent-soluble constituents have little original covalent cross-links. When the weight fraction of solvent inthe gels was decreased, the viscous strain and the viscoelastic strain decreased, while the elastic strain was almost unchanged, suggesting no participation of a solvent.
As a next step, the comparison of the viscoelastic behavior between an extract (this study) and residue from the same coal is needed to further clarify higher order structure (network structure) of coal.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 1.M.Iino,et al.: "Viscoelastic Property and Macromolecular Structure of Coal" 8th International Conference of Coal Science(Oviedo,Spain). 1. 59-62 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Iino: "Macromolecular Structure of Coal" International Symposium on mining science and Technology(Xuzhou,China). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Takanohashi,et al.: "Viscoelasticity of Coal Gel Films Prepared from Solvent-soluble.Constituents of Coals" 213th ACS National Meeting(San Francisco,USA). (in press). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Iino, H.Watanabe, and T.Takanohashi: "Viscoelastic Property and Macromolecular Structure of Coal" Proceeding of 8th International Confeence of Coal Science (Oviedo, Spain). Volume 1. 59-62 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Iino: "Macromolecular Structure of Coal" Proceeding of International Symposium on mining science and Technology (Xuzhou, China). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Takanohashi, S.Isoda, S.Doi, and M.Iino: "Viscoelasticity of Coal Gel Films Prepared from Solvent-soluble Constituents of Coals" Proceeding of 213th ACS National Meeting (San Francisco, USA). (in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M. Iino: "Swelling and Viscoelasticity of Loy Yang Coal-N-Methyl-2-pyrrolidinone gel" Proc. The 7th Australian Coal Science Conference. 205-212 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M. Iino, et al.: "Study of the Interaction of Aromatic Compounds with Coals by Inverse Liquid Chromatography" Energy & Fuels. 10. 1017-1021 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M. Iino, et al.: "Extraction and Swelling of Low-Rank Coals with Various Solvents at Room Temperature" Energy & Fuels. 10. 1128-1132 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M.Iino: "Viscoelastic property and macromolecular structure of coal" Proc.The 8th International Conference on Coal Science. Vol.2. 59-62 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Iino: "Macromolecular structure of coal" Proc.International Symposium on Mining and Technology. (発表予定). (1997)

    • Related Report
      1995 Annual Research Report

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

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