解説23．SDGs に対応するためのポリマー材料開発最前線
(12) 動的共有結合を利用したSDG’s時代の接着剤
2022 年 58 巻 2 号 p. 79-87
詳細
2022 年 58 巻 2 号 p. 79-87
Recycle of epoxy resins and their composites becomes serious problem due to their less degradability. Herein, we proposed an environmentally friendly recycling system for thermosetting resins by utilizing dynamic covalent disulfide bonds in the presence of a cysteine-containing tripeptide, glutathione. Glutathione can cleave the network structure of the epoxy resin by a thiol-disulfide exchange reaction with the disulfide bonds incorporated in the epoxy resin. The recycled epoxy resin showed about 90% of the initial mechanical strength. We also introduced applications of the disulfide-including epoxy resins as reworkable adhesion and indicator of adhesion strength.
