Synthesis and Properties of Block Copolymers Containing Aliphatic Polycarbonate Units

• Project/Area Number: 16K05788
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Polymer chemistry
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: NAKANO Koji 東京農工大学, 工学(系)研究科(研究院), 准教授 (70345099)
• Research Collaborator: NOGUCHI Keiichi
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: ブロック共重合体 / エポキシド / 二酸化炭素 / ビニルポリマー / ラジカル重合 / 高分子合成 / ポリオレフィン / 高分子構造・物性

Outline of Final Research Achievements

In this study, we have developed the novel method to synthesize block copolymers of aliphatic polycarbonates (APC), which is obtained by the alternating copolymerization of epoxides with carbon dioxide, and vinyl polymers. The copolymerization with suitable chain transfer agents successfully gave the APCs with functional groups for the controlled radical polymerization of vinyl monomers. In addition, the atom tranfer radical polymerization and the reversible addition-fragmentation chain transfer polymerization of vinyl monomers were found to proceed to give the corresponding block copolymers of APCs and vinyl polymers.

Academic Significance and Societal Importance of the Research Achievements

APCは，化成品の原料として有効利用が望まれる二酸化炭素を原料とすることから，持続可能な社会に貢献する高分子材料として，学術・実用両方の観点から研究が展開されてきた．一方，ガラス転移温度や力学強度が低く，APCを実用化する上での障害となっている．本研究の成果によって得られたブロック共重合体には，APC単独では実現できない機能を発現することが予想され，APCを基盤とする材料開発に大きく貢献すると期待できる．

Research Products

• [Int'l Joint Research] Chulalongkorn University(タイ)
• [Journal Article] Dinuclear Co-Salcy Complexes with a Dibenzofuran Linker for Copolymerizations of Epoxides with Cyclic Anhydrides or Carbon Dioxide (2019)
  • Author(s): Hiranoi Yo、Nakano Koji
  • Journal Title: Chemistry Letters Volume: 48 Issue: 5 Pages: 479-482
  • DOI: 10.1246/cl.190079
  • NAID: 130007642547
  • Peer Reviewed
• [Journal Article] Copolymerization of epoxides with cyclic anhydrides catalyzed by dinuclear cobalt complexes (2018)
  • Author(s): Hiranoi Yo、Nakano Koji
  • Journal Title: Beilstein Journal of Organic Chemistry Volume: 14 Pages: 2779-2788
  • DOI: 10.3762/bjoc.14.255
  • Peer Reviewed
• [Journal Article] Block Copolymers of Aliphatic Polycarbonates: Combination of Immortal Epoxide/Carbon-dioxide Copolymerization and Atom Transfer Radical Polymerization of Vinyl Monomers (2018)
  • Author(s): Yuri Mizuno, Koji Nakano
  • Journal Title: Chem. Lett. Volume: 47 Issue: 4 Pages: 580-583
  • DOI: 10.1246/cl.180045
  • NAID: 130006638868
  • Peer Reviewed / Open Access
• [Presentation] Block Copolymer Synthesis:Combination of Ring-opening Copolymerization and Controlled Radical Polymerization (2018)
  • Author(s): Yuri Mizuno, Minori Ida, Koji Nakano
  • Organizer: Tateshina Conference on Organic Chemistry
  • Int'l Joint Research
• [Presentation] Copolymerization of Epoxides with Comonomers: Catalyst and Material Designs (2018)
  • Author(s): Koji Nakano
  • Organizer: International Conference on Advanced and Applied Petroleum, Petrochemicals, and Polymers in 2018 (ICAPPP2018)
  • Int'l Joint Research / Invited
• [Presentation] Synthesis and Properties of Block Copolymers of Epoxide/Cyclic-Anhydride Alternating Copolymers and Vinyl Polymers (2018)
  • Author(s): Minori Ida, Koji Nakano
  • Organizer: International Conference on Advanced and Applied Petroleum, Petrochemicals, and Polymers in 2018 (ICAPPP2018)
  • Int'l Joint Research
• [Presentation] Synthesis and Properties of Block Copolymers of Aliphatic Polycarbonates and Vinyl Polymers (2018)
  • Author(s): Tomohito Tsumeda, Yuri Mizuno, Koji Nakano
  • Organizer: International Conference on Advanced and Applied Petroleum, Petrochemicals, and Polymers in 2018 (ICAPPP2018)
  • Int'l Joint Research
• [Presentation] 修飾化脂肪族ポリカルボナートの合成と機能 (2017)
  • Author(s): 中野幸司
  • Organizer: 日本化学会山形地区講演会～機能材料にむけた合成化学～
  • Invited
• [Presentation] 脂肪族ポリカルボナート部位をもつブロック共重合体の合成 (2017)
  • Author(s): 水野友里・中野幸司
  • Organizer: 第66回高分子討論会
• [Patent(Industrial Property Rights)] 新規な高分子開始剤およびその製造方法、並びにブロック共重合体の製造方法 (2017)
  • Inventor(s): 中野幸司・西岡聖司
  • Industrial Property Rights Holder: 中野幸司・西岡聖司
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2017-169870
  • Filing Date: 2017