Anionic Polymerization of Polar Vinyl Monomers in Water

2020 Fiscal Year Final Research Report

• Project/Area Number: 18K05216
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 35010:Polymer chemistry-related
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: Matsuoka Shin-ichi 名古屋工業大学, 工学(系)研究科(研究院), 准教授 (10432288)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Keywords: ラジカル重合 / ルイスペア / 水 / (メタ）アクリル酸エステル / 金属トリフラート

Outline of Final Research Achievements

Highly active and unprecedented radical polymerization of polar vinyl monomers was realized by Lewis pair catalysts composed of Lewis acid and base, e.g. PPh3/Cu(OTf)2, using water as the solvent. A variety of experimental studies on the effects of additives and monomer hydrophilicity and analysis of polymer terminals have been performed. It is proposed that monomers are activated by the Lewis pair at the surface of water (“on-water”) to undergo rapid propagation through not an anionic but a radical polymerization mechanism.

Free Research Field

高分子合成化学

Academic Significance and Societal Importance of the Research Achievements

ルイスペア触媒と極性ビニルモノマー，水からラジカル重合活性種が生成することは，これまでの知見では想定できない新規な分子活性化手法である。また，水とモノマーの界面(on-water)において，Lewis Pair触媒だけではなく水の水素結合力が開始反応を促進していると考えられる。このような水の利用は，安価で環境低負荷な合成化学的手法として大きな波及効果が期待でき，社会的意義を有する。