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1990 Fiscal Year Final Research Report Summary

Dynamics of Structure Formation and Degradation in Elstomer Gels

Research Project

Project/Area Number 63470083
Research Category

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

Allocation TypeSingle-year Grants
Research Field 高分子物性
Research InstitutionTohoku University

Principal Investigator

ONO Katsumichi  Tohoku University, Chemical Research Institute of Non-Aqueous Solutions Associate Professor, 非水溶液化学研究所 助教授 (40006325)

Co-Investigator(Kenkyū-buntansha) HONDA Hisashi  Tohoku University, Chemical Research Institute of Non-Aqueous Solutions Research, 非水溶液化学研究所, 助手 (00181553)
OIKAWA Hidetoshi  Tohoku University, Chemical Research Institute of Non-Aqueous Solutions Research, 非水溶液化学研究所, 助手 (60134061)
MURAKAMI Kenkichi  Tohoku University, Chemical Research Institute of Non-Aqueous Solutions (only fo (90006289)
Project Period (FY) 1988 – 1990
KeywordsElasomer Network / Heterogeneous Structure / Crosslinking Reaction / Degradation / Swelling of Elastomer / エキサイマ-
Research Abstract

The change of the structure of elastomer networks induced by crosslinking and scission reactions were investigated by various physicoーchemical methods. Main results obtained are summarized below :
1. Micr-heterogeneous structure of crosslinked natural rubber was investigated by means of an ultra high resolution scanning electron microscopy. The observed structure with several hundred angstroms in sizes was formed in the initial state of crosslinking.
2. The kinetics of the overall reaction of crosslinking was successfully analyzed by simple consecutive reaction steps taking into account the autocatalytic nature.
3. A simple method for the determination of the molecular weight and its distribution using the analysis of chemical stress decay has been proposed.
4. The structure change of networks induced by oxidative degradation was investigated by NMR and freezing point depression. The primary structure of the network became heterogeneous as the degradation proceeded.
5. The heterogeneous structure induced by the elongation of elastomer networks was investigated by the ultra high resolution scanning electron microscopy. A new heterogeneous structure was appeared at high elongation ratio.
6. A structure of special bioelastomer obtained from the hinge ligament of a bivalve was investigated. The mechanical anisotropy of this bioelastomer was considered to be associated with the uniaxial orientation of the aragonite crystals finely dispersed in the elastomer matrix.
7. Quasi-elastic light scattering of swollen bimodal polysiloxane networks showed that the swelling occued in a heterogeneous manner.
8. The fluorescence intensity of an ex^imer forming elastomer diluted by non-fluorescent elastomer increased by crosslinking indicating that the contraction of elastomer chain occurred during crosslinking reaction.

  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] K.Ono: "The Correlation between Structure Formation and Kinetics of Vulcanization in Elastomers" Abstracts of 3rd International Seminar on Elastomers. 228-236 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ono: "Complex Formation and Ionic association in Methanol Solutions of Poly(Ethylene Oxide)and Alkaline Earth Salts" J.Macromol.Sci.ーChem.A26. 567-582 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Oikawa: "Network Structure and Mechanical Properties of Allophanateーcured Polyurethane Rubber" J.PolymerSci.:Part B:Polymer Physics. 27. 795-807 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Nagai: "Chemorheology of Allophanateーcured Polyurethane Rubber" J.Polymer Sci.:Part B:Polymer Physics. 27. 809-817 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Narisawa: "Interaction and Structure of PVAーCU(II)Comples:1.Binding of a Hydrophobic Dye toward PVAーCu(II)Comples" Polymer. 30. 1540-1545 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Oikawa: "Relationship Between Swollen Network Structure of Rubber Vulcanizates and Mechanism of Freezing Point Depression of Swelling Solvent" J.Macromol.Sci.ーPhys.B28. 187-216 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小野 勝道(共著): "アグネ承風社" エラストマ-系複合材料を知る事典. 315 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Murakami: "A Rapid and Simple Determination Method of Network ChainーLength Distribution of Crosslinked Polymers by Chemorheology" J.Appl.Polymer Sci.:Appl.Polymer Symposium. 44. 167-193 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ono: "The Correlation Between Structure Formation and Kinetics of Vulcanization in Elastomers" J.Appl.Polymer Sci.:Appl.Polymer Symposium. ・. 105-113 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Narisawa: "Interaction and Structure of PVA_ーCU(II) Complex;2.Effect of the MicroーStructure of the PVA Chain on the Binding Affinity of pーAminoazobenzene" Polymer. 31. 758-764 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ono: "Elastic Anistropy of Bivalve Hinge Ligament" J.Biomechanics. 23. 307-312 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Honda: "Complex Formation and Ionic association in Polyー(Ethylene Oxide) and Alkali Metal Salts Solutions in Nitromethane" Macromolecules. 23. 4950-4953 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Honda: "Solvent Effect on the Complexation Between Poly(Ethylene Oxide)and Alkali Metal Ions" Macromolecules. 23. 515-520 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ono: "Study on the Structure of Elastomer Netwrk by Excimer Fluorescence" Full Text of 4th International Seminar on Elastomers. 93-105 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ono: "Kinetic Studies on BーSiC Formation from Homogeneous Precursors" J.Material Sci.26. 388-392 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Oikawa: "Dynamic Light Scattering of Swollen Rubber Vulcanizates and the Swelling Mechanism" Macromolecules. 24. 1117-1122 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Ono: "Proton NMR Chemical Shift Induced by Ionic Association on Poly(ethylene Oxide)Chain" Macromolecules. 24. (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 小野 勝道: "バイオニックデザインII 貝殻および蝶番靭帯" 日本複合材料学会誌. 14. 14-20 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 村上 謙吉: "架橋ポリウレタンゴムの劣化挙動とケモレオロジ-との相関性" 日本ゴム協会誌. 61. 430-438 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Ono and K. Murakami: "Diffusion effects in the Sulfur Vnlcanization as Studied by Differential Calorimetry" Proceedings of IRC (International Rubber Conference) Sydney,. (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ono: "The Correlation between Structure Formation and Kinetics of Vulcanization in Elastomers" Abstracts of 3rd International Seminar on Elastomers, Akron, USA,. 228-236 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ono, H. Honda, and K. Murakami: "Complex Formation and Ionic Association in Methanol Solutions of Poly(ethylene Oxide) and Alkaline Earth Salts" J. Macromol. Sci. -Chem..A26,. 567-582 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Oikawa, T. Nagai, and K. Murakami: "Network Structure and Mechanical Properties of Allophanate-cured Polyurethane Rubber" J. Polymer Sci. : Part B : Polymer Physics,. 27,. 795-807 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Nagai, H. Oikawa, and K. Murakami: "Chemorheology of Allophanate-cured Polyurethane Rubber" J. Polymer Sci. : Part B : Polymer Physics,. 27,. 809-817 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Narisawa, K. Ono, and K. Murakami: "Interaction and Structure of PVA-Cu(II) Complex : 1. Binding of a Hydrophobic Dye toward PVA-Cu(II) Complex" Polymer,. 30,. 1540-1545 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Oikawa and K. Murakami: "Relationship Between Swollen Network Structure of Rubber Vulcani-zates and Mechanism of Freezing Point Depression of Swelling Solvent" J. Macromol. Sci., -Phys.,. B28,. 187-216 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Murakami, K. Suh, H. Oikawa: "A Rapid an Simple Determination Method of Network Chain-Length Distribution of Crosslinked Polymers by Chemorheology" J. Appl. Polymer Sci. : Applied Polmer Symposium,. 44,. 167-193 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ono: "The Correlation between Structure Formation and Kinetics of Vulcanization in Elastomers" J. Appl. Polymer Sci. : Applied Polymer Symposium,. 44,. 105-113 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Narisawa, K. Ono, and K. Murakami: "Interaction and Structure of PVA-Cu(II) Complex : 2. Effect of the MicroーStructure of the PVA Chain on the Binding Affinity of p-aminoazobenzene" Polymer,. 31,. 758-764 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ono, Y. Kikuchi, K. Higashi, N. Tamiya, and N. Yasuoka: "Elastic Anisotropy of Bivalve Hinge Ligament" J. Biomechanics,. 23,. 307-312 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Honda, K. Ono, and K. Murakami: "Solvent Effect on the Complexation between Poly(ethylene Oxide) and Alkali Metal ions" Macromolecules,. 23,. 515-520 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Honda, K. Ono, and K. Murakami: "Complex Formation and lonic Association in Poly(ethylene Oxide) and Alkali Metal Salts Solutions in Nitromethane" Macromolecules,. 23,. 4950-4953 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ono and K. Komatsu: "Study on the Structure of Elastomer Network by Excimer Fluore-scence" Full Text of 4th International Seminar on Elastomers, Kurume,. 93-105 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ono and Y. Kurachi: "Kinetic Studies on beta-Sic Formation from Homogeneous Precursors," J. Mater. Sic.,. 26,. 388-392 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Oikawa and K. Murakami: "Dynamic Light Scattering of Swollen Rubber Vulcanizates and the Swelling Mechanism" Macromolecules,. 24,. 1117-1122 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K. Ono and H. Honda: "Proton NMR Chemical Shift Induced by Ionic Association on Poly(ehtylene Oxide) Chain" Macromolecules. (1990)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-08-12  

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