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One-pot synthesis of polymer particles with encapsulated inorganic particles by sol-gel process inside the capsules

Research Project

Project/Area Number 17K05975
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Organic and hybrid materials
Research InstitutionKobe University

Principal Investigator

Suzuki Toyoko  神戸大学, 工学研究科, 助教 (40314504)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsポリマーカプセル / ゾルゲル反応 / 不均一重合 / フェムトリアクター / 粒子内包カプセル / ダブルエマルション / 水溶性物質内包カプセル / 金属粒子内包カプセル / 懸濁重合 / 金ナノ粒子 / 触媒 / 金属粒子 / シリカ粒子 / 有機無機複合材料 / カプセル / 無機微粒子 / ラジカル重合
Outline of Final Research Achievements

Poly(ethylene glycol dimethacrylate-co-methyl methacrylate)(P(EGDM-MMA)) particles with encapsulated tetraethyl orthosilicate (TEOS) were prepared via suspension polymerization using the Self-assembling Phase Separated Polymer (SaPSeP) method which is preparation method for hollow polymer particles. After the polymerization, aq. NH3 was subsequently added to the dispersion as a catalyst for sol-gel process, resulting in formation of P(EGDM-MMA) particles with encapsulated SiO2 particles. The sol-gel process proceeded in the water domains and SiO2 particles were formed only inside the capsules. The morphology of SiO2 particles can be controlled by the coalescence behavior of the domains.
Moreover, polymer capsules with Pd particles and a Pd complex and the capsules with Au particles were also prepared. Obtained capsules acted as a catalyst for the Suzuki-Miyaura cross coupling and/or reduced reaction of 4-nitrophenol to 4-aminophenol with NaBH4.

Academic Significance and Societal Importance of the Research Achievements

本研究は,通常均一溶液系で行われるゾルゲル反応を,ミクロンサイズのカプセル内という不均一系の限られた反応場において制御し,シリカをはじめとする無機微粒子の構造制御を試みる新しい取り組みである。また,粒子内包カプセルは既に提案された粒子材料であるが,多段階を要し,粒子の安定性にも問題があった。それに対し,本手法はワンポットで有機溶剤無しに分散安定性良く作製できる。高分子及び無機材料工学分野の両観点から,注目される複合材料作製法及び材料である。さらに,カプセルを有機合成反応系に適用すると,金属触媒の取扱の安全性向上だけでなく,回収が容易で触媒の再利用も期待されることから,本研究は意義深い。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (3 results)

All 2020 2019

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] 金ナノ粒子内包ポリマーダブルカプセルの作製2020

    • Author(s)
      〇鈴木 登代子・前田 拓郎・久保田 晴人・森 敦紀・南 秀人
    • Organizer
      第29回ポリマー材料フォーラム
    • Related Report
      2020 Annual Research Report
  • [Presentation] 金属触媒含有ポリマーカプセルの作製とその触媒能2019

    • Author(s)
      前田 拓朗・森 敦紀・○鈴木 登代子
    • Organizer
      第68回高分子学会年次大
    • Related Report
      2019 Research-status Report
  • [Presentation] Preparation of microcapsules with hemisphere silica particle2019

    • Author(s)
      ○Toyoko Suzuki, Mayu Ito, Atsunori Mori, Hideto Minami
    • Organizer
      The International Polymer Colloid Group (IPCG) Conference 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2022-01-27  

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