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Studies on Reaction Kinetics and Structure of Polymer Gels by Photon Correlation Spectroscopy

Research Project

Project/Area Number 09450362
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 高分子構造・物性(含繊維)
Research InstitutionKyoto Institute of Technology

Principal Investigator

SHIBAYAMA Mitsuhiro  Faculty of Textile Science, Kyoto Institute of Technology, Professor, 繊維学部, 教授 (00175390)

Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥13,900,000 (Direct Cost: ¥13,900,000)
Fiscal Year 1999: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1998: ¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1997: ¥9,400,000 (Direct Cost: ¥9,400,000)
Keywordspolymer gels / inhomogeneities / Static inhomogeneities / nonergodicity / dynamic light scattering / small-angle neutron scattering / photon correlation spectroscopy / time-resolved dynamic light scattering / ゾル-ゲル転移 / ゲル化 / パーコレーション / フラクタル / アクリルアミド / ポリマーハイブリッド / スペックル / 時分割動的散乱 / 静的構造不均一性 / ゲルモード
Research Abstract

Frozen (static) inhomogeneities as well as thermal (dynamic) concentration fluctuations are present in gels. We proposed a relevant method to characterize and decompose the two contributions, i.e., the frozen inhomogeneities and thermal fluctuations. This method consists of dynamic light scattering measurements at hundreds of sample positions. This is called the ensemble-average dynamic light scattering (EADLS). Another highlight of this work is the four methods of determining a gelation threshold. During a chemical reaction undergoing cross-linking, four characteristic features appear at the gelation threshold; (i) an abrupt increase in the scattered intensity, (ii) a power-law behavior in the time-intensity correlation function (ICF), (iii) a characteristic broadening of the decay time distribution function, and (iv) a deviation of the initial amplitude of ICF from unity. The validity of these methods was examined for organic chemical gels, inorganic silica gels, and thermoreversible physical gels. I believe that these works promise a rich field in soft matter physics, as the science of connectivity-correlated polymeric materials.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (32 results)

All Other

All Publications (32 results)

  • [Publications] H. Hirose, et al.: "Kinetics of Volume Phase Transition in Poly(N-isopropylacrylamide-co-acrylic acid) Gels"Macromolecules. 31.16. 5336-5342 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Norisuke, et al.: "Static Inhomogeneities in Thermoreversible Physical Gels"Phys. Rev. Lett.. 82.24. 4946-4949 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Shibayama, et al.: "Dynamics of Probe Particles Trapped in Polymer Solutions and in Polymer Gels"Macromolecules. 32.21. 7086-7092 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Shibayama, et al.: "Shrinking Kinetics of Poly(N-isopropylacrylamide) GelsT-jumped Across Its Volume Phase Transition Temperature"Macromolecules. 32.22. 7461-7468 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Shibayama, et al.: "Static Inhomogeneities and Dynamics of Swollen and Reactor-Batch Polymer Gels"J. Chem. Phys.. 112.1. 442-449 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H. Hirose, et al.: "Kinetics of Volume Phase Transition in Poly (N-isopropyl-acrylamide-co-acrylic acid) Gels"Macromolecules. vo1.31.16. 5336-5342 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T. Norisuye, et al.: "Time Resolved Dynamic Light Scattering Studies on Gelation Process of Organic-Inorganic Polymer Hybrid"Macromolecules. vol. 32.5. 1528-1533 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] F. Ikkai, etal.: "Static Inhomogeneities in Thermoreversible Physical Gels"Phys. Rev. Lett.. vol. 82.24. 4946-4949 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Shibayama, et al.: "Dynamics of Probe Particles Trapped in Polymer Solutions and in Polymer Gels"Macromolecules. vol. 32.21. 7086-7092 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Shibayama, et al.: "Shrinking Kinetics of Poly (N-isopropylacrylamide) Gels T-jumped Across Its Volume Phase Transition Temperature"Macromolecules. vol. 32.22. 7461-7468 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M. Shibayama, et al.: "Static Inhomogeneities and Dynamics of Swollen and Reactor-Batch Polymer Gels"J. Chem. Phys.. vol. 112.1. 442-449 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H.Hirose et al.: "Kinetics of Volume Phase Transition in Poly(N-isopropylacrylamide-co-acrylic acid) Gels"Macromolecules. vol.31.16. 5336-5342 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Norisuye et al.: "Time Resolved Dynamic Light Scattering Studies on Gelation Process of Organic-Inorganic Polymer Hybrid"Macromolecules. vol.32.5. 1528-1533 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] F.Ikkai et al.: "Static Inhomogeneities in Thermoreversible Physical Gels"Phys.Rev.Lett.. vol.82.24. 4946-4949 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Shibayama et al.: "Dynamics of Probe Particles Trapped in Polymer Solutions and in Polymer Gels"Macromolecules. vol.32.21. 7086-7092 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Shibayama et al.: "Shrinking Kinetics of Poly(N-isopropylacrylamide) Gels T-jumped Across Its Volume Phase Transition Temperature"Macromolecules. vol.32.22. 7461-7468 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Shibayama et al.: "Static Inhomogeneities and Dynamics of Swollen and Reactor-Batch Polymer Gels"J.Chem.Phys.. vol.112.1. 442-449 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Shibayama,et al.: "Static Inhomogeneities and Dynamic Fluctuations of Temperature Sensitive Polymer Gels." Physica A. vol.249. 245-252 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Shibayama,et al.: "Comparison of the Experimental and Theoretical Structure Factors of Temperature Sensitive Polymer Gels" Macromolecules. vol.31. 1608-1614 (1998.5)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Shibayama,et al.: "Small-angle Neutron Scattering Study on Charged Gels in Deformed State." Macromolecules. vol.31. 2586-2592 (1998.8)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Norisuye,et al.: "Time Resolved Light Scattering Study on the Gelation Process of Poly(N-isopropyl acrylamide)." Polymer. vol.39. 2769-2775 (1998.8)

    • Related Report
      1998 Annual Research Report
  • [Publications] F.Ikkai,et al.: "Effect of Degree of Cross-linking on Spatial Inhomogeneity in Charged Gels. 2.Small-angle Neutron Scattering Study." Macromolecules. vol.31. 3275-3281 (1998.10)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Norisuye,et al.: "Cluster-size Distribution of Cross-linked Polymer Chains Across the Gelation Threshold" Macromolecules. vol.31. 5316-5322 (1998.16)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Shibayama,et al.: "In-situ Studies on Gelation by Dynamic and Time-Resolved Light Scattering Technique in “The Wiley Polymer Networks Group Review",Vol.2" B.T.Stokke and A.Elgsaeter Eds.,Wiley,1999(in press).,

    • Related Report
      1998 Annual Research Report
  • [Publications] F.Ikkai,et al.: "Anomalous Cross-Link Density Dependence of Spatial Inhomogeneities in Polymer Gels in “The Wiley Polymer Networks Group Review",Vol.2" B.T.Stokke and A.Elgsaeter Eds.,Wiley,1999(in press).,

    • Related Report
      1998 Annual Research Report
  • [Publications] F.Ikkai, M.Shibayama: "Inflection in Cross-link Dependence of Gel Inhomogeneity" Phys.Rev.E,Rapid Commun.,vol.56,1997.1. R51-R54

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Shibayama et al.: "Effect of Degree of Cross-linking on Spatial Inhomogeneity in Charged Gels.I.Theoretical Prediction and Light Scattering Study" J.Chem.Phys.,vol.107,1997.13. 5227-5235

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Shibayama et al.: "Simple Scaling Rules on Swollen and Shrunken Gels" Macromolecules,vol.30,1997.23. 7307-7312

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Shibayama et al.: "Static Inhomogeneities and Dynamic Fluctuations of Temperature Sensitive Polymer Gels." Physica A. (in pless).

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Norisuye et al.: "Time Resolved Light Scattering Study on the Gelation Process of Poly (N-isopropyl acrylamide)." Polymer. (in press).

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Shibayama et al.: "Comparison of the Experimental and Theoretical Structure Factors of Temperature Sensitive" Macromolecules. (in press).

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Shibayama: "″Structure and Properties of Multi-Phase Polymeric Materials″,T.Araki,Q.Tran-Cong,and M.Shibayama Eds.,Chapt.6" Marcel Dekker (in press),

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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