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A Study on Higher-Order Structure and Molecular Motions of the ionic cluster in ionomer

Research Project

Project/Area Number 04650808
Research Category

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

Allocation TypeSingle-year Grants
Research Field 高分子物性・高分子材料(含機械材料)
Research InstitutionNagoya Institute of Technology

Principal Investigator

TSUJITA Yoshiharu  Nagoya Institute of Technology, Dep.Mat.Scl.and Eng., Prof., 工学部, 教授 (70016591)

Co-Investigator(Kenkyū-buntansha) YOSHIMIZU Hiroaki  Nagoya Institute of Technology, Dep.Mat.Scl.and Eng., Assistant Prof., 工学部, 助手 (10240350)
KINOSHITA Takatoshi  Nagoya Institute of Technology, Dep.Mat.Scl.and Eng., Associate Prof., 工学部, 助教授 (60135407)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1992: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsionomers / ionic Cluster / Ethylene Matrix / the Crystallites Formed by Annealing / DSC / Viscoelastioity / Solid-State NMR / Spin-Probe ESR Method / 高次構造 / 分子運動 / 電子スピン共鳴スペクトル / 粘弾性 / α分散 / β分散
Research Abstract

Two endothermic peaks observed by DSC measurement around 50 - 60 ゚C and 90 ゚C for as received poly(ethylene-co-methacrylic acid) and its salts were attributed to the melting of polyethylene crystallites. After annealing in the cooling process, the lower temperature peak was observed at a temperature slightly higher than the annealing temperature. The lower temperature peak corresponded to the melting of the crystallites formed by the annealing and the higher one to that by cooling. The crystallization of ionomer is hindered by the presence of ionic aggregates which play a role of crosslinking. Consequently the crystallization of ionomer aged, that is, annealed at room temperature is much more remarkable than that of the copolymer or low density polyethylene. The ^<13>C spin-lattice relaxation time of the crystalline region of ionomer was shorter than that of polyethylene. This finding is suggested that size of crystal in the ionomers were relatively small than that in polyethylene. Similar interpretations on the crystal size of the ionomers were obtained from the discussion about ^1H spin-diffusion with ^1H spin-lattice relaxation times in the laboratory and rotating frames. On the other hand, the mobility of methacrylic molety in the ionic cluster was restricted in comparison with that in ethylene-methacrylic acid copolymer. Next, to discuss the motion of amorphous region, spin-probe ESR method was carried out. The temperature at which the separation of the outmost peaks of the ESR spectrum of spin-probe in polymer matrix is 50G (T_<50G>), is a valuable tool for Tg determination. The values of T_<50G> for TEMPO-containing ionomers were estimated to be about -20 ゚C - 20 ゚C and -25 ゚C at low and high neutralization, respectively. This finding show that there is the distribution of the dynamical features of amorphous region in the ionomer, and the distribution changes with the neutralization.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 吉水広明・中村修司・長江伸和・辻田義治・滝澤章・木下隆利: "エチレン-メタクリル酸共重合体とそのアイオノマーの分子運動" 高分子学会予稿集. 41. 4442-4444 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 中村修司・吉水広明・武井美幸・辻田義治・木下隆利: "スピンプローブESR法によるエチレンアイオノマーの分子運動評価" 高分子学会予稿集. 42. 1365-1365 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 奥村久雄・吉水広明・武井美幸・辻田義治・木下隆利: "エチレンアイオノマーにおけるエチレン結晶部分とその熱履歴" 第24回中化連講演予稿集. 302-303 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 吉水広明・村田裕介・辻田義治・武井美幸・木下隆利: "固体高分解能^<13>C NMR法によるエチレンアイオノマーの構造解析" 第32回NMR討論会講演要旨集. 13-14 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 奥村久雄・吉水広明・辻田義治・木下隆利: "エチレンアイオノマーに特徴的な結晶相及びその力学的性質への影響" 高分子学会予稿集. 43. (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 村田裕介・吉水広明・辻田義治・木下隆利: "固体NMR法によるエチレンアイオノマーの構造研究" 高分子学会予稿集. 43. (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Yoshimizu, et al.: "Molecular Dynamics of Ethylene-Methacrylic Acid Copolymer and its ionomers" Polym.Prep.Vol.41. 4442-4444 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Nakamura, et al.: "Molecular Dynamics of Ethylene ionomers as Studied by Spin-Probe ESR Method" Polym, Prep.Vol.42. 1365-1365 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Okumura, et al.: "Crystalline Region of Ethylene ionomer and its Thermal Hysterests, 24th Annual Meeting of UCRS in Chubu Area, Japan" 302-303 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Yoshimizu, et al.: "A Structural Study of Ethylene-ionomer by High-Resolution Solid-State ^<13>C NMR, 32nd Meeting on NMR, Tokyo" 13-14 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Okumura, et al.: "Relationship Between Crystalline Phase and the Mechanical Property of Ethylene ionomer" Polym.Prep.Vol.43(in press). (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Y.Murata, et al.: "A Structural Study of Ethylene ionomer by Solid-State NMR" Polym.Prep.Vol.43(in press). (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 吉水広明・中村修司・長江伸和・辻田義治・滝澤章・木下隆利: "エチレン-メタクリル酸共重合体とそのアイオノマーの分子運動" 高分子学会予稿集. 41. 4442-4444 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 中村修司・吉水広明・武井美幸・辻田義治・木下隆利: "スピンプローブESR法によるエチレンアイオノマーの分子運動性評価" 高分子学会予稿集. 42. 1365-1365 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 奥村久雄・吉水広明・武井美幸・辻田義治・木下隆利: "エチレンアイオノマーにおけるエチレン結晶部分とその熱履歴" 第24回中化連講演予稿集. 302-303 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 吉水広明・村田裕介・辻田義治・武井美幸・木下隆利: "固体高分解能^<13>C NMR法によるエチレンアイオノマーの構造解析" 第32回NMR討論会講演要旨集. 13-14 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 奥村久雄・吉水広明・辻田義治・木下隆利: "エチレンアイオノマーに特徴的な結晶相及びその力学的性質への影響" 高分子学会予稿集. 43. (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 村田裕介・吉水広明・辻田義治・木下隆利: "固体NMR法によるエチレンアイオノマーの構造研究" 高分子学会予稿集. 43. (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] Y.TSUJITA,M.KATO,T,KINOSHITA,A.TAKIZAWA: "Miscibihity estimated by the volume change chue to mixing of a polystyreue/poly(vinyl methyl ether)blend system" Polymer. 33. 773-777 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Y.TSUJITA: "Membrane Science and Technology" Marcel Dekker, 56 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Y.Yamada,N.Furukawa,K.Wada,Y.Tsujita,A.Takizawa: "Anvances in Polyimide Science and Technology" Technomic publishing co.Inc., 9 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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