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Fundamental understanding of polymer gels and sponges

Research Project

Project/Area Number 21H04688
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 35:Polymers, organic materials, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Sakai Takamasa  東京大学, 大学院工学系研究科(工学部), 教授 (70456151)

Co-Investigator(Kenkyū-buntansha) 片島 拓弥  東京大学, 大学院工学系研究科(工学部), 講師 (20759188)
Li Xiang  北海道大学, 先端生命科学研究院, 准教授 (30759840)
作道 直幸  東京大学, 大学院工学系研究科(工学部), 特任准教授 (50635555)
Project Period (FY) 2021-04-05 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥42,510,000 (Direct Cost: ¥32,700,000、Indirect Cost: ¥9,810,000)
Fiscal Year 2024: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2023: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2022: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
Fiscal Year 2021: ¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000)
Keywords高分子ゲル / ゲルーゲル相分離 / 細胞接着 / 足場材料 / ゲルの収縮 / 弾性率 / ゲル-ゲル相分離 / バイオマテリアル / ハイドロゲル / ゲル・ゲル相分離 / スポンジ / 相分離 / 物質拡散 / レオロジー
Outline of Research at the Start

ゲルやスポンジなどの含水性高分子網目材料は、生体組織と類似の構造・物性を有し、材料科学的にも生体材料応用を目指す上でも興味深い材料である。その一方で、両者には、網目サイズや内包する水との相溶性など、相違点も多く存在する。
本研究では、「ゲルとスポンジの類似性と特異性」を明らかにし、ゲルとスポンジを繋ぐ横断的な学理を確立することを目的とする。申請者が世界で初めて確立した、同一の成分組成からゲルとスポンジを作り分ける手法を用い、ゲル、スポンジ、ゲル・スポンジ中間物質を系統的に作製し、構造・物性を網羅的に測定・解析することで分野横断的な体系化を試みる。

Outline of Final Research Achievements

Our experimental results demonstrate that gels with higher elastic modulus exhibited significant contraction, hydrophobization, and clear GGPS behavior. In contrast, gels with lower elasticity did not undergo phase separation, indicating that a threshold level of elasticity is required to trigger GGPS. Furthermore, we observed spontaneous cell adhesion on the surface of these hydrophobized PEG gels, even in the absence of adhesive peptides such as RGD, highlighting the biological relevance of mechanically tuned surface properties.
Overall, this study provides a detailed analysis of intermediate gel-sponge structures mediated by GGPS, offering fundamental insights into the mechanical and interfacial factors that differentiate gels and sponges. The results contribute not only to the development of novel PEG-based scaffolding materials but also to a deeper understanding of material-cell interactions from the perspective of soft matter and biomaterials science.

Academic Significance and Societal Importance of the Research Achievements

本研究のゲル-ゲル相分離(GGPS)現象解明は、弾性率が相分離の鍵因子であることを実証し、高分子科学の相分離理論に重要な貢献をしています。弾性率による疎水性制御という新しい材料設計指針も確立しました。社会的には、細胞接着配列不要で細胞接着可能なPEGゲルの開発が、再生医療や組織工学における革新的足場材料の創出につながります。また、弾性率制御による機能性ゲル材料は、薬物送達システムや創傷治療材料などの医療応用が期待されます。これらの成果は生体材料開発の新方向性を示し、医療・健康分野の課題解決に貢献します。

Report

(6 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • 2021 Comments on the Screening Results   Annual Research Report
  • Research Products

    (124 results)

All 2024 2023 2022 2021 Other

All Journal Article (32 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 32 results,  Open Access: 24 results) Presentation (91 results) (of which Int'l Joint Research: 28 results,  Invited: 65 results) Remarks (1 results)

  • [Journal Article] Gel?Gel Phase Separation in Clustered Poly(ethylene glycol) Hydrogel with Enhanced Hydrophobicity2024

    • Author(s)
      Ishikawa Shohei、Yasuda Takashi、Iwanaga Yasuhide、Sakai Takamasa
    • Journal Title

      ACS Macro Letters

      Volume: 13 Issue: 10 Pages: 1369-1375

    • DOI

      10.1021/acsmacrolett.4c00448

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhancing cell adhesion in synthetic hydrogels <i>via</i> physical confinement of peptide-functionalized polymer clusters2024

    • Author(s)
      Ishikawa Shohei、Kamata Hiroyuki、Sakai Takamasa
    • Journal Title

      Journal of Materials Chemistry B

      Volume: 12 Issue: 29 Pages: 7103-7112

    • DOI

      10.1039/d4tb00761a

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optimizing a self-solidifying hydrogel as an endoscopically deliverable hydrogel coating system: a proof-of-concept study on porcine endoscopic submucosal dissection-induced ulcers2024

    • Author(s)
      Cho Rina、Kamata Hiroyuki、Tsuji Yosuke、Fujisawa Ayano、Miura Yuko、Ishikawa Shohei、Sato Ren、Katashima Takuya、Sakai Takamasa、Fujishiro Mitsuhiro
    • Journal Title

      Polymer Journal

      Volume: 56 Issue: 9 Pages: 855-863

    • DOI

      10.1038/s41428-024-00921-w

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Predicting the effects of degradation on viscoelastic relaxation time using model transient networks2024

    • Author(s)
      Kobayashi Ryunosuke、Naito Mitsuru、Miyata Kanjiro、Sakai Takamasa、Chung Ung-il、Katashima Takuya
    • Journal Title

      Polymer Journal

      Volume: 56 Issue: 7 Pages: 685-691

    • DOI

      10.1038/s41428-024-00902-z

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Preclustering Gelatin for Faster‐Forming Injectable Hydrogels: A Strategy for Fabricating 3D Hydrogel Scaffolds with Improved Cell Dispersion2024

    • Author(s)
      Ishikawa Shohei、Kamata Hiroyuki、Sakai Takamasa
    • Journal Title

      Macromolecular Bioscience

      Volume: 24 Issue: 6

    • DOI

      10.1002/mabi.202300450

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Network of cyano-p-aramid nanofibres creates ultrastiff and water-rich hydrospongels2024

    • Author(s)
      Lee Minkyung、Kwak Hojung、Eom Youngho、Park Seul-A、Sakai Takamasa、Jeon Hyeonyeol、Koo Jun Mo、Kim Dowan、Cha Chaenyung、Hwang Sung Yeon、Park Jeyoung、Oh Dongyeop X.
    • Journal Title

      Nature Materials

      Volume: 23 Issue: 3 Pages: 414-423

    • DOI

      10.1038/s41563-023-01760-5

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Strain-Induced Crystallization in Tetra-Branched Poly(ethylene glycol) Hydrogels with a Common Network Structure2024

    • Author(s)
      Hashimoto Kei、Enoki Takato、Liu Chang、Li Xiang、Sakai Takamasa、Mayumi Koichi
    • Journal Title

      Macromolecules

      Volume: 57 Issue: 4 Pages: 1461-1468

    • DOI

      10.1021/acs.macromol.3c02038

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Injectable phase-separated tetra-armed poly(ethylene glycol) hydrogel scaffold allows sustained release of growth factors to enhance the repair of critical bone defects2024

    • Author(s)
      Nepal Shant、Si Jinyan、Ishikawa Shohei、Nishikawa Masaki、Sakai Yasuyuki、Akimoto Aya M.、Okada Hiroyuki、Ohba Shinsuke、Chung Ung-il、Sakai Takamasa、Hojo Hironori
    • Journal Title

      Regenerative Therapy

      Volume: 25 Pages: 24-34

    • DOI

      10.1016/j.reth.2023.11.008

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Molecular Weight-dependent Diffusion, Biodistribution, and Clearance Behavior of Tetra-armed Poly(ethylene glycol) Subcutaneously Injected into the Back of Mice.2023

    • Author(s)
      Ishikawa S, Kato M, Si J, Yu L, Kimura K, Katashima T, Naito M, Kurita M, Sakai T.
    • Journal Title

      ACS Macro Letter

      Volume: 12 Issue: 4 Pages: 510-517

    • DOI

      10.1021/acsmacrolett.3c00044

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] In situ-formable, dynamic crosslinked poly(ethylene glycol) carrier for localized adeno-associated virus infection and reduced off-target effects.2023

    • Author(s)
      Kato M, Ishikawa S, Qi S, Du Z, Katashima T, Naito M, Numahata T, Okazaki M, Sakai T, and Kurita M.
    • Journal Title

      Communications Biology

      Volume: - Issue: 1 Pages: 508-508

    • DOI

      10.1038/s42003-023-04851-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Miscibility and ternary diagram of aqueous polyvinyl alcohols with different degrees of saponification2023

    • Author(s)
      Kim Junhyuk、Ishikawa Shohei、Naito Mitsuru、Li Xiang、Chung Ung-il、Sakai Takamasa
    • Journal Title

      Scientific Reports

      Volume: 13 Issue: 1 Pages: 8791-8791

    • DOI

      10.1038/s41598-023-35575-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tissue-Adhesive Hydrogel Spray System for Live Cell Immobilization on Biological Surfaces2023

    • Author(s)
      Ishikawa Shohei、Kamata Hiroyuki、Chung Ung-il、Sakai Takamasa
    • Journal Title

      ACS Applied Bio Materials

      Volume: 6 Issue: 11 Pages: 4613-4619

    • DOI

      10.1021/acsabm.3c00378

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] All-Atom Molecular Dynamics Simulations of Poly(ethylene glycol) Networks in Water for Evaluating Negative Energetic Elasticity2023

    • Author(s)
      Hagita Katsumi、Nagahara Sota、Murashima Takahiro、Sakai Takamasa、Sakumichi Naoyuki
    • Journal Title

      Macromolecules

      Volume: 56 Issue: 20 Pages: 8095-8105

    • DOI

      10.1021/acs.macromol.3c01121

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Percolation-induced gel-gel phase separation in a dilute polymer network2023

    • Author(s)
      Ishikawa Shohei、Iwanaga Yasuhide、Uneyama Takashi、Li Xiang、Hojo Hironori、Fujinaga Ikuo、Katashima Takuya、Saito Taku、Okada Yasushi、Chung Ung-il、Sakumichi Naoyuki、Sakai Takamasa
    • Journal Title

      Nature Materials

      Volume: 22 Issue: 12 Pages: 1564-1570

    • DOI

      10.1038/s41563-023-01712-z

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quasi-elastic neutron scattering study on dynamics of polymer gels with controlled inhomogeneity under uniaxial deformation2023

    • Author(s)
      Aomura Kosuke、Yasuda Yusuke、Yamada Takeshi、Sakai Takamasa、Mayumi Koichi
    • Journal Title

      Soft Matter

      Volume: 19 Issue: 1 Pages: 147-152

    • DOI

      10.1039/d2sm00784c

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of network junctions and defects on the crystallization of model poly(ethylene glycol) networks2023

    • Author(s)
      Ohira Masashi、Nakagawa Shintaro、Sampei Ryotaro、Noritomi Takako、Sakai Takamasa、Shibayama Mitsuhiro、Li Xiang
    • Journal Title

      Soft Matter

      Volume: 19 Issue: 8 Pages: 1653-1663

    • DOI

      10.1039/d2sm01036d

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phantom Chain Simulations for the Fracture of Energy-Minimized Tetra- and Tri-Branched Networks2023

    • Author(s)
      Masubuchi Yuichi、Doi Yuya、Ishida Takato、Sakumichi Naoyuki、Sakai Takamasa、Mayumi Koichi、Uneyama Takashi
    • Journal Title

      Macromolecules

      Volume: 56 Issue: 5 Pages: 2217-2223

    • DOI

      10.1021/acs.macromol.3c00047

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interstitial-fluid shear stresses induced by vertically oscillating head motion lower blood pressure in hypertensive rats and humans2023

    • Author(s)
      Murase Shuhei、Sakitani Naoyoshi、Maekawa Takahiro、Yoshino Daisuke、Takano Kouji、Konno Ayumu、Hirai Hirokazu、Saito Taku、et al
    • Journal Title

      Nature Biomedical Engineering

      Volume: 7 Issue: 11 Pages: 1350-1373

    • DOI

      10.1038/s41551-023-01061-x

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cross-linking polybutadiene rubber via a thiol-ene reaction with polycysteine as a degradable cross-linker2023

    • Author(s)
      Tsuchiya Kousuke、Terada Kayo、Tsuji Yui、Law Simon Sau Yin、Masunaga Hiroyasu、Katashima Takuya、Sakai Takamasa、Numata Keiji
    • Journal Title

      Polymer Journal

      Volume: 56 Issue: 4 Pages: 391-400

    • DOI

      10.1038/s41428-023-00855-9

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Decoupling between Translational Diffusion and Viscoelasticity in Transient Networks with Controlled Network Connectivity2022

    • Author(s)
      Katashima Takuya、Kobayashi Ryunosuke、Ishikawa Shohei、Naito Mitsuru、Miyata Kanjiro、Chung Ung-il、Sakai Takamasa
    • Journal Title

      Gels

      Volume: 8 Issue: 12 Pages: 830-830

    • DOI

      10.3390/gels8120830

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of network connectivity on viscoelastic relaxation in transient networks using experimental approach2022

    • Author(s)
      Katashima Takuya、Kudo Ryota、Onishi Ryoya、Naito Mitsuru、Nagatoishi Satoru、Miyata Kanjiro、Tsumoto Kouhei、Chung Ung-Il、Sakai Takamasa
    • Journal Title

      Frontiers in Soft Matter

      Volume: 2 Pages: 1059156-1059156

    • DOI

      10.3389/frsfm.2022.1059156

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Analysis of the sustained release ability of bevacizumab-loaded tetra-PEG gel2022

    • Author(s)
      Murakami Tomoya、Hoshi Sujin、Okamoto Fumiki、Sakai Takamasa、Katashima Takuya、Naito Mitsuru、Oshika Tetsuro
    • Journal Title

      Experimental Eye Research

      Volume: 223 Pages: 109206-109206

    • DOI

      10.1016/j.exer.2022.109206

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Simple Preparation of Injectable Hydrogels with Phase-Separated Structures That Can Encapsulate Live Cells2022

    • Author(s)
      Ishikawa Shohei、Yoshikawa Yuki、Kamata Hiroyuki、Chung Ung-il、Sakai Takamasa
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 14 Issue: 31 Pages: 35444-35453

    • DOI

      10.1021/acsami.2c09906

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dually-dynamic covalent tetraPEG hydrogels end-linked with boronate ester and acylhydrazone groups2022

    • Author(s)
      Michael Charalambos、Apostolides Demetris E.、Patrickios Costas S.、Sakai Takamasa
    • Journal Title

      Soft Matter

      Volume: 18 Issue: 32 Pages: 5966-5978

    • DOI

      10.1039/d2sm00594h

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Brownian simulations for tetra-gel-type phantom networks composed of prepolymers with bidisperse arm length2022

    • Author(s)
      Masubuchi Yuichi、Yamazaki Ryohei、Doi Yuya、Uneyama Takashi、Sakumichi Naoyuki、Sakai Takamasa
    • Journal Title

      Soft Matter

      Volume: 18 Issue: 25 Pages: 4715-4724

    • DOI

      10.1039/d2sm00488g

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimental Comparison of Bond Lifetime and Viscoelastic Relaxation in Transient Networks with Well-Controlled Structures2022

    • Author(s)
      Katashima Takuya、Kudo Ryota、Naito Mitsuru、Nagatoishi Satoru、Miyata Kanjiro、Chung Ung-il、Tsumoto Kouhei、Sakai Takamasa
    • Journal Title

      ACS Macro Letters

      Volume: 11 Issue: 6 Pages: 753-759

    • DOI

      10.1021/acsmacrolett.2c00152

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Non-swellability of polyelectrolyte gel in divalent salt solution due to aggregation formation2022

    • Author(s)
      Jian Tang, Takuya Katashima, Caidric Indaya Gupit, Xiang Li, Yoshiro Mitsukami, Yuki Yokoyama, Naoyuki Sakumichi, Ung-il Chung, Mitsuhiro Shibayama, Takamasa Sakai
    • Journal Title

      Polymer

      Volume: 250 Pages: 124894-124894

    • DOI

      10.1016/j.polymer.2022.124894

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tri-branched gels: Rubbery materials with the lowest branching factor approach the ideal elastic limit2022

    • Author(s)
      Takeshi Fujiyabu, Naoyuki Sakumichi, Takuya Katashima, Chang Liu, Koichi Mayumi, Ung-il Chung, Takamasa Sakai
    • Journal Title

      Science Advances

      Volume: 8 Issue: 14 Pages: 1-10

    • DOI

      10.1126/sciadv.abk0010

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hemostatic Capability of a Novel Tetra-Polyethylene Glycol Hydrogel2022

    • Author(s)
      Okata Shinya、Hoshina Katsuyuki、Hanada Kazumasa、Kamata Hiroyuki、Fujisawa Ayano、Yoshikawa Yuki、Sakai Takamasa
    • Journal Title

      Annals of Vascular Surgery

      Volume: 84 Pages: 398-404

    • DOI

      10.1016/j.avsg.2022.01.016

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Star-Polymer-DNA Gels Showing Highly Predictable and Tunable Mechanical Responses2022

    • Author(s)
      Ohira Masashi、Katashima Takuya、Naito Mitsuru、Aoki Daisuke、Yoshikawa Yusuke、Iwase Hiroki、Takata Shin‐ichi、Miyata Kanjiro、Chung Ung‐il、Sakai Takamasa、Shibayama Mitsuhiro、Li Xiang
    • Journal Title

      Advanced Materials

      Volume: 34 Issue: 13 Pages: 2108818-2108818

    • DOI

      10.1002/adma.202108818

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Linear elasticity of polymer gels in terms of negative energy elasticity2021

    • Author(s)
      Naoyuki Sakumichi, Yuki Yoshikawa, and Takamasa Sakai
    • Journal Title

      Polymer Journal

      Volume: 53 Issue: 12 Pages: 1293-1303

    • DOI

      10.1038/s41428-021-00529-4

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temperature Dependence of Polymer Network Diffusion2021

    • Author(s)
      Takeshi Fujiyabu, Takamasa Sakai, Ryota Kudo, Yuki Yoshikawa, Takuya Katashima, Ung-il Chung, Naoyuki Sakumichi
    • Journal Title

      Physical Review Letters

      Volume: 127 Issue: 23 Pages: 237801-237801

    • DOI

      10.1103/physrevlett.127.237801

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Tetra Gel: Exploring Precision Gel Science2024

    • Author(s)
      Takamasa Sakai
    • Organizer
      Fracture of Soft Materials An AmeriMech Symposium
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Percolation-induced gel-gel phase separation in a dilute polymer network2024

    • Author(s)
      Takamasa Sakai
    • Organizer
      IUTAM Symposium on the Mechanics of Soft Materials and Soft Robots
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Percolation induced gel-gel phase separation in a dilute polymer network2024

    • Author(s)
      Takamasa Sakai
    • Organizer
      International Symposium on Polymer Physics
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Precision Gel Science for Gel Medicine2024

    • Author(s)
      Takamasa Sakai
    • Organizer
      ISSS-10
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Precision Gel Science for Gel Medicine2024

    • Author(s)
      Takamasa Sakai
    • Organizer
      Gel Symposium 2024
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Percolation induced gel-gel phase separation in a dilute polymer network2024

    • Author(s)
      Takamasa Sakai
    • Organizer
      Symposium on Life Science Technologies
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Gel-gel phase separation -Interplay between osmotic and elastic pressures-2024

    • Author(s)
      Takamasa Sakai
    • Organizer
      Lenet International Symposium Low Entropy Soft Matter
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Percolation induced gel-gel phase separation in a dilute polymer network2024

    • Author(s)
      Takamasa Sakai
    • Organizer
      ACS Spring2025
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 精密ゲル科学とゲルの医療応用2024

    • Author(s)
      酒井崇匡
    • Organizer
      第105回千葉地域活動高分子研究交流講演会 高分子学会関東支部
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 生き物ってゲルなの?2024

    • Author(s)
      酒井崇匡
    • Organizer
      第73回高分子学会年次大会 高分子科学市民講座
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 工学とは何かⅠ2024

    • Author(s)
      酒井崇匡
    • Organizer
      東大オープンキャンパス
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 精密ゲル科学とゲル医療の推進2024

    • Author(s)
      酒井崇匡
    • Organizer
      茨城地区高分子若手の会
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] ゲルの材料科学2024

    • Author(s)
      酒井崇匡
    • Organizer
      バイオマテリアル学会STAMランチョンセミナー
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 精密ゲル科学とその医療応用2024

    • Author(s)
      酒井崇匡
    • Organizer
      大塚電子技術交流会
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 均一で制御可能な網目構造を持つTetraゲルの開発2024

    • Author(s)
      酒井崇匡
    • Organizer
      "未来へのバイオ技術"勉強会「バイオ素材百花繚乱19~新発想の素材開発」
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 高分子ゲル科学の深化とその医療応用2024

    • Author(s)
      酒井崇匡
    • Organizer
      九州大学先導物質化学研究所 特別講演会
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 高分子ゲルの材料科学2024

    • Author(s)
      酒井崇匡
    • Organizer
      第30回水無瀬イノベーションフォーラム
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] あれもこれもゲル?複素ゲル計画、始動!2024

    • Author(s)
      酒井崇匡
    • Organizer
      超異分野学会2025
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] Star-polymer-DNA gels showing predictable stress relaxation behavior2024

    • Author(s)
      Li Xiang
    • Organizer
      日本分子生物学会年会
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] DNA架橋ゲルの精密分子設計と材料力学特性の制御2024

    • Author(s)
      Li Xiang
    • Organizer
      日本化学会 春季年会
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] 精密なゲル科学とゲルの医療応用2023

    • Author(s)
      酒井崇匡
    • Organizer
      京都大学物理学第一教室大学院特別講義3談話会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 精密ゲル科学に基づく医療ゲル材料プラットフォームの開発2023

    • Author(s)
      酒井崇匡
    • Organizer
      令和5年度 後期 CERI 寄附講座 ( 公開講座 )
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Percolation induced gel-gel phase separation in a dilute polymer network2023

    • Author(s)
      Takamasa Sakai
    • Organizer
      2023 Japan-US Seminar on Polymer Chemistry: Meeting the Challenges of a Sustainable Society with MacromoleculesPercolation induced gel-gel phase separation in a dilute polymer network
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Percolation induced gel-gel phase separation in a dilute polymer network2023

    • Author(s)
      Takamasa Sakai
    • Organizer
      2023 Brainlink X-Lab Day
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Negative energy elasticity in polymer gel elasticity2023

    • Author(s)
      Takamasa Sakai
    • Organizer
      PRCR2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 星型高分子からなる過渡的網目のミクロな動力学とマクロレオロジー特性の相関2023

    • Author(s)
      片島拓弥
    • Organizer
      共有結合の交換・変換・切断が司る機能樹脂創成に向けた研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 高分子網目系のレオロジー2023

    • Author(s)
      片島拓弥
    • Organizer
      第43回レオロジー講座 -基礎と測定法-
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 明確な構造を持つ永久および過渡的高分子網目材料の精密レオロジー解析2023

    • Author(s)
      片島拓弥
    • Organizer
      日本レオロジー学会第50回記念年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Elucidation of viscoelastic relaxation of transient networks with well-defined structures2023

    • Author(s)
      Takuya Katashima
    • Organizer
      9th International Discussion Meeting on Relaxations in Complex Systems
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Relationships between viscoelastic relaxation and network connectivity in transient networks with well-controlled network structures2023

    • Author(s)
      Takuya Katashima
    • Organizer
      8th Pacific Rim Conference on Rheology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ソフトマターのミクロ構造2023

    • Author(s)
      Xiang Li
    • Organizer
      北海道高分子若手研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 高分子ゲルの網目トポロジーと負のエネルギー弾性2023

    • Author(s)
      作道直幸
    • Organizer
      第50回記念年会 日本レオロジー学会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Tri-branched gels: Low branching factors make rubbery materials ultra-elastic2022

    • Author(s)
      酒井崇匡
    • Organizer
      JTBPS2022
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ハイドロゲルの精密制御による医療応用展開2022

    • Author(s)
      酒井崇匡
    • Organizer
      日本化学会第102回春季年会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 高分子ゲルの医用応用にむけた基礎学理の解明2022

    • Author(s)
      酒井崇匡
    • Organizer
      医用高分子研究会
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Invited
  • [Presentation] 高分子ゲル の基礎物理の新展開と材料としての社会実装2022

    • Author(s)
      酒井崇匡
    • Organizer
      バイオトライボロジシンポジウム
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Invited
  • [Presentation] Tri-branched gels: Rubbery materials with the lowest branching factor approach the ideal elastic limit2022

    • Author(s)
      酒井崇匡
    • Organizer
      MRS2022
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Tri-branched gels: Rubbery materials with the lowest branching factor approach the ideal elastic limit2022

    • Author(s)
      酒井崇匡
    • Organizer
      PNG2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Tri-branched gels: Rubbery materials with the lowest branching factor approach the ideal elastic limit2022

    • Author(s)
      酒井崇匡
    • Organizer
      Gelsympo2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 膨潤を制御したハイドロゲルを用いた人工硝子体および止血剤の開発2022

    • Author(s)
      酒井崇匡
    • Organizer
      高分子討論会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] ゲルの応力分布の可視化に基づく動的破壊挙動の理解2022

    • Author(s)
      酒井崇匡
    • Organizer
      第12回CSJ化学フェスタ「高分子材料と高分子鎖の精密分解科学」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 均一なゲルを用いたゲル弾性と弾性限界についての実験的研究2022

    • Author(s)
      酒井崇匡
    • Organizer
      「復元力応用分科会」第33回講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 水をコントロールする能力とは!?2022

    • Author(s)
      酒井崇匡
    • Organizer
      サイエンスアゴラ2022
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Precision gel science for biomedical applications2022

    • Author(s)
      酒井崇匡
    • Organizer
      5th Workshop on Symbiosis of Biology and Nanodevices
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Precision gel science for biomedical applications2022

    • Author(s)
      酒井崇匡
    • Organizer
      ICPAC KK 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高分子ゲルの熱力学:準希薄スケーリング原理と負のエネルギー弾性2022

    • Author(s)
      作道直幸
    • Organizer
      駒場物性セミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] ゴム・ゲルのレオロジー2022

    • Author(s)
      酒井崇匡
    • Organizer
      レオロジー学会イブニングセミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 負のエネルギー弾性の観点から見た高分子ゲルの線形弾性2022

    • Author(s)
      吉川 祐紀、大友元奎、作道直幸、酒井崇匡
    • Organizer
      第33回高分子ゲル研究討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] de Gennes の c* 定理を否定する 高分子ゲルの準希薄スケーリング則2022

    • Author(s)
      安田 傑, 作道 直幸, 酒井 崇匡
    • Organizer
      第33回高分子ゲル研究討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Low branching factors make rubbery materials ultra-elastic2022

    • Author(s)
      Takamasa Sakai
    • Organizer
      SNU-UT Workshop
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ゲルって何?2022

    • Author(s)
      酒井崇匡
    • Organizer
      超異分野学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 均一な三分岐網目を有する高分子ゲルのき裂進展挙動2022

    • Author(s)
      早川 愛璃彩, 齊藤千晶,作道直幸, 酒井崇匡
    • Organizer
      関東修論レオロジー発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 末端会合性網目の異常拡散と会合ダイナミクスの関係2022

    • Author(s)
      小林隆之助, 片島拓弥, 石川昇平, 工藤俊太, 内藤瑞, 津本浩平, 長門石暁, 鄭雄一, 酒井崇匡
    • Organizer
      若手会学生発表会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高分子ゲルの物理に基づくバイオマテリアルの合理的創出2022

    • Author(s)
      酒井崇匡
    • Organizer
      持続社会発展のための機能化学研究委員会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 均一な高分子ゲルの示す線形破壊力学的な亀裂進展挙動2022

    • Author(s)
      作道直幸、齊藤千晶、早川愛璃彩、酒井崇匡
    • Organizer
      物理学会第77回年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ハイドロゲルの精密制御による医療応用展開2022

    • Author(s)
      酒井崇匡
    • Organizer
      日本科学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 4分岐高分子からなる一時網目の粘弾性とその分子機構2021

    • Author(s)
      工藤稜太、片島拓弥、内藤瑞、宮田完二郎、鄭雄一、酒井崇匡
    • Organizer
      レオロジー学会 第48年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 構造制御された高分子ゲルの医療への応用展開2021

    • Author(s)
      酒井崇匡
    • Organizer
      超分子研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Negative energy elasticity in a rubberlike gel2021

    • Author(s)
      Takamasa Sakai
    • Organizer
      MACRO2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高分子ゲルにおける負のエネルギー弾性2021

    • Author(s)
      作道直幸、吉川 祐紀、酒井崇匡
    • Organizer
      日本ゴム協会2021年年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Negative energy elasticity in a rubberlike gel2021

    • Author(s)
      Takamasa Sakai
    • Organizer
      IUTAM Symposium on Gels
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 粗視化分子動力学法による水中 Poly(ethylene glycol) 一本鎖の弾性の解析2021

    • Author(s)
      長原颯大
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高分子ゲルにおける負のエネルギー弾性2021

    • Author(s)
      作道直幸
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 高分子ゲルの平衡膨潤を予測する浸透圧の準希薄スケーリング則2021

    • Author(s)
      安田 傑, 作道 直幸, 酒井 崇匡
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Mechanical Properties of Doubly Crosslinked Gels2021

    • Author(s)
      片島拓弥
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 実験的アプローチによる高分子ゲルの構造物性相関の解明2021

    • Author(s)
      酒井崇匡
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Velocity jump of crack propagation in rubber-like materials2021

    • Author(s)
      作道直幸
    • Organizer
      IUTAM Symposium on Gels
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高分子ゲルの医用応用にむけた基礎学理の解明2021

    • Author(s)
      酒井崇匡
    • Organizer
      第 64 回 茨城地区活動講演会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Universal Description of Diffusion Coefficient of Polymer Network2021

    • Author(s)
      Takeshi Fujiyabu
    • Organizer
      The 19th UT2-Mac Workshop
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] スライムのレオロジー2021

    • Author(s)
      片島拓弥
    • Organizer
      関東高分子サマーキャンプ
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 高分子ゲルにおける準希薄スケーリング原理2021

    • Author(s)
      作道直幸
    • Organizer
      2021年度高分子化学構造・物性相関研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] スライムの粘弾性緩和の分子機構2021

    • Author(s)
      片島拓弥
    • Organizer
      2021年度高分子化学構造・物性相関研究会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高分子ゲル弾性の統計力学モデル2021

    • Author(s)
      作道 直幸, 白井伸宙
    • Organizer
      第70回高分子討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 星型分岐性高分子溶液から見る 高分子ゲルの浸透圧の普遍性2021

    • Author(s)
      安田 傑, 作道 直幸, 酒井 崇匡
    • Organizer
      第70回高分子討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 均一な分岐構造を持つスライムのミクロな会合挙動とマクロな粘弾性の相関2021

    • Author(s)
      工藤稜太、片島拓弥、内藤瑞、長門石曉、宮田完二郎、鄭雄一、津本浩平、酒井崇匡
    • Organizer
      第70回高分子討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 均一な三分岐網目を有する高分子ゲルのき裂進展挙動2021

    • Author(s)
      早川 愛璃彩, 齊藤千晶, 作道 直幸, 酒井 崇匡
    • Organizer
      第70回高分子討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 様々な分岐構造を持つ高分子ゲルにおける負のエネルギー弾性2021

    • Author(s)
      作道直幸、吉川 祐紀、酒井崇匡
    • Organizer
      物理学会秋季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] テトラPEGゲルの発明とゲルに関する普遍法則の発見2021

    • Author(s)
      酒井崇匡
    • Organizer
      第418回ゴム技術フォーラム月例会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 過渡的網目の会合動力学と粘弾性緩和の相関2021

    • Author(s)
      工藤稜太、片島拓弥、内藤瑞、宮田完二郎、津本浩平、長門石曉、鄭 雄一、酒井崇匡
    • Organizer
      第69回レオロジー討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 高分子ゲル弾性の統計力学モデル2021

    • Author(s)
      作道 直幸, 白井伸宙
    • Organizer
      第69回レオロジー討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 粗視化分子動力学による水中 Poly(ethylene glycol) 一本鎖の弾性の解析2021

    • Author(s)
      長原 颯大、作道 直幸、久保 淳、梅野 宜崇、酒井 崇匡
    • Organizer
      第69回レオロジー討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 精密な網目構造を有する高分子ゲルをもちいたゲル弾性の熱力学的解析2021

    • Author(s)
      酒井崇匡
    • Organizer
      ネットワークポリマー講演討論会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 粘弾性固体における亀裂進展速度ジャンプ2021

    • Author(s)
      作道直幸
    • Organizer
      粘着研究会第179回(11月度)例会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 動的光散乱法による高分子ゲルの協同拡散係数の解析2021

    • Author(s)
      酒井崇匡
    • Organizer
      第33回散乱研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] ゲルの弾性率において網目のトポロジーに依存する因子と独立な因子の特定2021

    • Author(s)
      作道直幸、大友元奎、吉川 祐紀、酒井崇匡
    • Organizer
      2021年度高分子基礎物性研究会・高分子計算機科学研究会 合同討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 粗視化モデルによる水中における Poly(ethylene glycol)一本鎖の弾性の解析2021

    • Author(s)
      長原 颯大、作道 直幸、酒井 崇匡、久保 淳、梅野 宜崇
    • Organizer
      2021年度高分子基礎物性研究会・高分子計算機科学研究会 合同討論会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Tri-branched gels: Low branching factors make rubbery materials ultra_elastic2021

    • Author(s)
      Takamasa Sakai
    • Organizer
      MRM2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Effect of nano-dissociation kinetics on macroscopic viscoelasticity in four-branched transient networks2021

    • Author(s)
      Takuya Katashima
    • Organizer
      MRM2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Systematic and clear discussion about the polymer gel dynamics using well-defined macroscopic parameters of polymer gels2021

    • Author(s)
      Takeshi Fujiyabu
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Negative energy elasticity in a rubber-like gel2021

    • Author(s)
      Yuki Yoshikawa
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ultra-elastic hydrogel consisting of minimal network2021

    • Author(s)
      Takamasa Sakai
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Remarks] 酒井・鄭研究室

    • URL

      https://gel.tokyo/tetra-gel/index.html

    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2026-01-16  

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