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FREE VOLUME DURING CURING REACTION OF THERMOSETTING RESIN STUDIED BY POSITRON ANNIHILATION

Research Project

Project/Area Number 08651062
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 高分子合成
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

SUZUKI Takenori  High Energy Accelerator Research Organization, Radiation Science Center, Professor, 放射線科学センター, 教授 (40162961)

Co-Investigator(Kenkyū-buntansha) NUMAJIRI Masaharu  High Energy Accelerator Research Organization, Radiation Science Center, 放射線科学センター, 助手 (20189385)
OKI Yuichi  High Energy Accelerator Research Organization, Radiation Science Center, 放射線科学センター, 助手 (40204094)
MIURA Taichi  High Energy Accelerator Research Organization, Radiation Science Center, Assista, 放射線科学センター, 助手 (80209717)
KONDO Kenjiro  High Energy Accelerator Research Organization, Radiation Science Center, Profess, 放射線科学センター, 教授 (20004434)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1996: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsPositron Annihilation / Thermosetting resin / Polymerization / Free Volume / Cyanate / Lifetime / Positronium / Epoxy resin / 重合度 / 陽電子の寿命 / エポチシ樹脂硬化過程
Research Abstract

Positron annihilation lifetime spectroscopy (PALS) has been applied successfully in solid state physics to detect defects and impurities. Recently, PALS has been applied to polymers. Positrons injected into polymers from radioisotopes such as ^<22>Na lose energy through interaction with atoms and molecules. After loosing the energy, positrons with a few hundred eV make the terminal spurs, which consist of ions, electrons and positrons, and then the positrons from hydrogen like atom, positronium (Ps). Ps diffuses in polymers until it is trapped in intermolecular spaces. Ps decays in these spaces and the size can be measured by the long lifetime (tau_3) of ortho-Ps.
In this research, polymerization of bisphenol A dicyanate was examined using PALS and the increase in the specific volume was observed with the increase in the degree of polymerization. Also free volumes of several epoxy resins have been studied. The shift of the size of free volumes was observed when a THPM epoxy resin absorbed water.
Also, the relaxation of polymer structures was discussed using PALS.After quenching the novolac epoxy resins to liquid nitrogen temperature, the large intermolecular spaces were observed, which would be formed by combining several small spaces due to the stress among polymer chains.

Report

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

    (40 results)

All Other

All Publications (40 results)

  • [Publications] T.Suzuki, et al.: "Radiaton Effecton poly propylene studied by relaxation behairor at lro temperalure stadit by PA" Polymer. 37. 5521-5524 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Suzuki, et al.: "Free Voume of characteristics and water absorption of novolac epoxyresins investigated by positron Annihilation" Polymer. 37. 3025-3030 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.SUZUKI, et al: "Freevolume of cyanateresins studied by positron annihilation" J.of Radioanaly tical and Nuclear chemistry. 210. 555-562 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 信山 克義, 鈴木 健訓, 他: "電子ビーム照射したポリエーテルエーテルケトン中における陽電子寿命の温度特性" 電気学会論告誌A. 116-A. 279-280 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 鈴木 健訓: "陽電子消滅法のネットワークポリマーへの応用" ネットワークポリマー. 18. 121-132 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Oshima, T.Suzuki, et al.: "Performance report of a newly developed slow positron pulsing apparatus" Materials Science Forum. 255-257. 629-631 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Suzuki, et al.: "Relaration behavior of polymers at low temperature studied by positron annihilation" Materials cience Forum. 255-257. 351-353 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] E.Hamada, T.Suzuki et al.: "Positron annihilation studies of icosahedral AlCuRn and Alcn Fo alloys" Materials Science Forum. 255-257. 451-453 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Kobayashi, T.Suzuki et al: "Positronium formation in polypropylene and polyethylone,-effects of 6-irradiation and Flectric field-" Materials Science Forum. 255-257. 67-71 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Oshima, T.Suzuki.et al.: "Design of a high-efficiency short-pulsed positron beaia system" Applied surface Science. 116. 82-86 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 藤田 成隆, 鈴木 健訓, 他: "陽電子消滅法による高分子材料の自由体積の評価" 電気学会論文誌A. 117-A. 351-354 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.kobayashi, T.Suzuki, et al.: "Electric field effect on positronium formation inγ -irradiated polypropylene and polyethylene" Radiation Physics Chemistny. 50. 589-593 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] W.Zheng, T.Suzuki, et al.: "Mobility of positrons inγ -irradiated polyproplene and polyethylene" Radiation Physics ehemistry. 50 (in press). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Oshima, T.Suzuki, et al.: "Application of pulsed slow-positron beam to polymer" J.Radioanatylical and Nuclear chemistry. in press. (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Ogawa, T.suzuki, et al.: "characterization of Poly Csilylone merhgleneis by positron annihilation lifetin spectroscopy" J.Polym.Science Part B.(in press). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Hayashi, T.Suzuki, et al.: "Characterization of Curing behavior of cyanic ester by a positron annihilation" Polymer. in press. (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Suzuki et al.: "Radiation effect on polypropylene studied by relaxational behavior at low temperature using positron annihilation" Polymer. 37. 5521-5524 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Suzuki et al.: "Free-volume characteristics and water absorption of novolac epoxy resins investigated by positron annihilation" Polymer. 37. 3025-3030 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Suzuki et al.: "Free volume of cyanate resins studied by positron annihilation" J.Radioana.Nuc.chem. 210. 555-562 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Shinyama, S.Fujita, T.Suzuki: "Temperature Characteristics of Positron Lifetime in Electron Beam Irradiated Poly (Ether Ether Ketone)" T.IEE of Japan. 116-A. 279-280 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Suzuki: "Application of Positron annihilation to Network Polymer" Networkpolymer. v.18. 121-132 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Oshima, T.Suzuki et al.: "Performance report of a newly developed slow positron pulsing apparatus" Materials Sci.Forum. 255-257. 629-631 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Suzuki et al.: "Relaxation Behavior of Polymers at Low Temperature Studied by Positron Annihilation" Materials Science Forum. 255-257. 351-353 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] E.Hamada, T.Suzuki et al.: "Positron annihilation studies of icosahedral AlCuRu and AlCuFe alloys" Materials Science Forum. 255-257. 451-453 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Kobayashi, T.Suzuki et al.: "positronium formation in polypropylene and polyethylene, -effects of gamma-irradiation and Electric field-" Materials Science Forum. 255-257. 67-71 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Oshima, T.Suzuki et al.: "Design of a high-efficiency short-pulsed positron beam system" Applied Surface Science. 116. 82-86 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Fujita, K.Shinyama, T.Suzuki: "Evaluation of Free Volume in Polymer by Positron Annihilation" T.IEE of Japan. 117-A. 351-354 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Kobayashi, W.Zheng, K.Hirata and T.Suzuki: "Electric field effect on positronium formation in gamma-irradiated polypropylene and polyethylene" Rad.Phys.Chemistry. 50. 589-593 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] W.Zheng, Y.Kobayashi, K.Hirata and T.Suzuki: "Mobility of positrons in gamma-irradiated polypropylene and polyethylene" Rad.Phys.Chemistry. (in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Oshima, E.Hamada, T.Suzuki, I.Kanazawa and Y.Ito: "Application of Pulsed Slow-Positron Beam to Polymer" J.Radional.Nuc.Chem.(in press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Ogawa, T.Suzuki and M.Murakami: "Characterization of Poly (silylenemethylene)s by positron annihilation lifetime spectroscopy" J.Polym.Sci., B.(in press). (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Hayashi, H.Nakamura and T.Suzuki: "Characterization of curing behavior of cyanic ester by a positron-annihilation lifetime technique" Polymer. (in press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 鈴木健訓: "陽電子消滅法のネットワークポリマーへの応用" ネットワークポリマー. 18. 121-132 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Suzuki, et al.: "Relaxational Behaviorof Polymers at Low Temperature Studiced by Positron Annihilatied" Materials Science Forum. 255-257. 351-353 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 藤田成隆, 鈴木健訓, 他: "陽電子消滅法による高分子材料の自由体積り評価" 電気学会論文誌A. 117A. 351-354 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] E.Hamada, T.Suzuki, et al.: "Positron annihilation studies oficosahedral AlCuRu and AlCuFe Alloys" Metericls Science Forum. 255-257. 451-453 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Suzuki T.,Shiomi Y.,et al.: "Free-volume characteristics and water absorption of novolac epoxy resins investigated by positron annihilation"" POLYMER. 37. 3025-3030 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Suzuki T.,Oshima N.,et al.: "Radiation effect on polypropylene studied by relaxational behavior at low temperature using positron annihilation" POLYMER. 37. 5521-5524 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Suzuki T.,Oshima N.,et al.: "Free volume of cyanate resins studied by positron annihilation" JOURNAL of RADIOANALYTICAL and NUCLEAR CHEM. (in Press). (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Oshima N.,Suzuki T.,et al.: "Design of a high-efficiency short-pulsed positron beam system" APPLIER SURFACE SCIENCE. (in Press). (1996)

    • Related Report
      1996 Annual Research Report

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

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