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Precision design and time-scale analysis of polymer depolymerization and degradation under verious environment

Planned Research

Project AreaPrecision Degradation of Polymer and Polymeric Material
Project/Area Number 20H05734
Research Category

Grant-in-Aid for Transformative Research Areas (B)

Allocation TypeSingle-year Grants
Review Section Transformative Research Areas, Section (II)
Research InstitutionTokyo Institute of Technology

Principal Investigator

Satoh Kotaro  東京工業大学, 物質理工学院, 教授 (70377810)

Co-Investigator(Kenkyū-buntansha) 石曽根 隆  東京工業大学, 物質理工学院, 教授 (60212883)
Project Period (FY) 2020-10-02 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥41,600,000 (Direct Cost: ¥32,000,000、Indirect Cost: ¥9,600,000)
Fiscal Year 2022: ¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2021: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Fiscal Year 2020: ¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Keywordsリビング重合 / 精密分解 / ドーマント種 / 化学分解 / 重合活性種
Outline of Research at the Start

近年、高分子の分解が、海洋問題をはじめとして、様々なシチュエーションにおいて、深刻な問題となってきている。本研究では、精密高分子合成反応で培った知見をもとに、合成とは逆の分解反応の制御が可能なユニットの設計・高分子鎖への導入を行い、精密分解可能な新規高分子材料の設計指針を探索する。とくに、従来、精密重合において副反応制御に用いられてきた安定な共有結合種を用い、分解の活性種へと変換する未開拓の分解性高分子材料の設計手法を提案し、高分子材料の性質を明らかにする。

Outline of Final Research Achievements

In this study, we explored new principles for designing novel polymer materials capable of controlled chemical decomposition/degradation, leveraging insights from precision polymerization. Specifically, we utilized stable covalent species traditionally employed for side-reaction control in precision polymerization to design unexplored polymer materials convertible into active species for decomposition. We elucidated their properties and focused on various chemical bonds forming polymer chains. Through precise design and synthesis of model compounds and model polymers/oligomers via precision polymerization, we re-evaluated the molecular-level bond cleavage (chemical decomposition) reactions. Additionally, we collaborated with other researchers to systematize this field as a new academic domain.

Academic Significance and Societal Importance of the Research Achievements

高分子合成分野においては、分解を志向したビニルポリマーの主鎖中へのエステル結合の導入やクローズド・ループのリサイクルを志向した環状モノマーの開環重合および解重合による関する類似の研究がドイツやアメリカ、中国から報告されつつある。本研究課題では、申請者らが独自に開発してきた単一のドーマント種から異なる活性種を生成させる新しい精密重合系に基づいた精密分解を目的としている。このような従来の精密重合の化学に立脚した新しい分解機構の提案は、他に報告例がなく、その学術的、社会的意義は高い。

Report

(4 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (24 results)

All 2024 2023 2022 2021

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 4 results) Presentation (16 results) (of which Int'l Joint Research: 7 results,  Invited: 15 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Effect of Oligomers Derived from Biodegradable Polyesters on Eco- and Neurotoxicity2023

    • Author(s)
      Yoshinaga Naoto、Tateishi Ayaka、Kobayashi Yasuaki、Kubo Tomohiro、Miyakawa Hitoshi、Satoh Kotaro、Numata Keiji
    • Journal Title

      Biomacromolecules

      Volume: tbd Issue: 6 Pages: 2721-2729

    • DOI

      10.1021/acs.biomac.3c00160

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of polycaprolactone degradation products on the water flea, <scp><i>Daphnia magna</i></scp>: Carbodiimide additives have acute and chronic toxicity2023

    • Author(s)
      Matsumoto Megumi、Ito Haruka、Tateishi Ayaka、Kobayashi Yasuaki、Satoh Kotaro、Numata Keiji、Miyakawa Hitoshi
    • Journal Title

      Journal of Applied Toxicology

      Volume: 43 Issue: 12 Pages: 1840-1848

    • DOI

      10.1002/jat.4516

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Addition-Fragmentation Ring-Opening Polymerization of Bio-Based Thiocarbonyl l-Lactide for Dual Degradable Vinyl Copolymers2022

    • Author(s)
      Ryoya Kamiki, Tomohiro Kubo, Kotaro Satoh*
    • Journal Title

      Macromol. Rapid. Commun.

      Volume: 2022 Issue: 2 Pages: 202200537-202200537

    • DOI

      10.1002/marc.202200537

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Interlocking degradation of vinyl polymers via main-chain C-C bonds scission by introducing pendant-responsive comonomers2022

    • Author(s)
      Sota Yamamoto, Tomohiro Kubo, Kotaro Satoh*
    • Journal Title

      J. Polym. Sci.

      Volume: 60 Issue: 24 Pages: 3435-3446

    • DOI

      10.1002/pol.20220250

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] One-pot synthesis of structure-controlled temperature-responsive polymer gels2022

    • Author(s)
      Sakai Tomoki、Ito Nagisa、Hara Mitsuo、Seki Takahiro、Uchiyama Mineto、Kamigaito Masami、Satoh Kotaro、Hoshino Taiki、Takeoka Yukikazu
    • Journal Title

      Polymer Chemistry

      Volume: 13 Issue: 29 Pages: 4230-4240

    • DOI

      10.1039/d2py00554a

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 制御/リビングラジカル重合の基礎から最新の研究動向まで2022

    • Author(s)
      佐藤浩太郎
    • Journal Title

      日本接着学会誌

      Volume: 58 Pages: 159-168

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Novel bio-based and/or degradable polymers using controlled/living polymerization2024

    • Author(s)
      Kotaro Satoh
    • Organizer
      4th CSLT-CSJ Joint Symposium, Tamkang University, Tamsui, New Taipei City
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 植物由来化合物の精密重合による機能性ポリマーの開発2023

    • Author(s)
      佐藤浩太郎
    • Organizer
      第16回 ChemBioハイブリッドレクチャー、東京大学
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Controlled Polymerization of Renewable Functional Styrenes & Dual Degradable Vinyl Copolymers by Bio-Based Lactide2023

    • Author(s)
      Kotaro Satoh
    • Organizer
      Japan-Thailand Bilateral Symposium of Advanced Materials for Sustainable Society, VISTEC
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Novel Bio-Based and/or Degradable Polymers Using Controlled/Living Polymerization2023

    • Author(s)
      Kotaro Satoh
    • Organizer
      Japan-Thailand Bilateral Symposium of Advanced Materials for Sustainable Society, Chulalongkorn
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Precision Synthesis of Novel Degradable Polymers from Renewable Bio-based Resources2023

    • Author(s)
      Kotaro Satoh
    • Organizer
      International Symposium on Feedstock Recycling of Polymeric Materials (ISFR 2023), Sendai, Japan
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 機能性接着剤に向けた官能基含有植物由来モノマーの重合2023

    • Author(s)
      佐藤浩太郎
    • Organizer
      第54回 中部化学関係学協会支部連合秋季大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 化学反応による高分子精密分解に向けた分子設計2022

    • Author(s)
      佐藤浩太郎
    • Organizer
      繊維学会 新研究委員会設立シンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 異種反応を用いた精密高分子合成の新しい手法2021

    • Author(s)
      佐藤浩太郎
    • Organizer
      第70回高分子学会年次大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Controlled Polymerization of Functional Styrene from Natural Resource2021

    • Author(s)
      Kotaro Satoh
    • Organizer
      The 48th World Polymer Congress, IUPAC-MACRO2020+
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 再生可能な植物資源を用いた高分子の精密合成2021

    • Author(s)
      佐藤浩太郎
    • Organizer
      第50回繊維学会 夏季セミナー
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 高分子化学2021

    • Author(s)
      佐藤浩太郎
    • Organizer
      基本を深く学ぶ接着基礎講座、日本接着学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 高分子合成の基礎1―連鎖重合を中心に2021

    • Author(s)
      佐藤浩太郎
    • Organizer
      2021年度若手社員のための高分子基礎講座, 高分子学会関東支部
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] New Polymerization Systems by Switching Active Species2021

    • Author(s)
      Kotaro Satoh
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 精密重合の高分子鎖切断の設計への展開2021

    • Author(s)
      佐藤浩太郎
    • Organizer
      第52回中部化学関係学協会支部連合秋季大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Novel Bio-Based and/or Degradable Vinyl Polymers using Controlled/Living Polymerization2021

    • Author(s)
      Kotaro Satoh
    • Organizer
      Pacifichem 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高分子の精密重合から高分子鎖切断の精密設計へ2021

    • Author(s)
      佐藤浩太郎
    • Organizer
      学術変革領域B高分子精密分解 公開キックオフシンポジウム
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Book] 新訂三版 ラジカル重合ハンドブック「重合機構変換によるブロック共重合体の合成」2023

    • Author(s)
      佐藤浩太郎
    • Total Pages
      8
    • Publisher
      NTS
    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] 共重合体及びその製造方法、並びに、成形体2021

    • Inventor(s)
      佐藤浩太郎、久保 智弘、神木 遼也
    • Industrial Property Rights Holder
      佐藤浩太郎、久保 智弘、神木 遼也
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-131293
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report

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Published: 2020-10-30   Modified: 2025-01-30  

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