メタノリシスによるバイオマス由来エポキシアミン熱固体の閉環リサイクル性
Xianyuan Wu1,2, Peter Hartmann2, Dimitri Berne3
1Stratingh Institute for Chemistry, University of Groningen, 9747AG Groningen, Netherlands.
Science (New York, N.Y.)
|April 11, 2024
まとめ
この研究では,リグノセルロースから派生した新しいリサイクル可能なエポキシ樹脂を導入しています. 材料は優れた性質を示し,化学的にリサイクルされ,重複使用のための主要な成分を再生できます.
科学分野:
- ポリマー化学
- 材料科学
- 持続可能な化学
背景:
- エポキシ樹脂の熱セット (ERT) は広く使用されていますが,リサイクル能力の低下と環境汚染により課題に直面しています.
- 特に再生可能資源から得られる ERTを 開発することが不可欠です
研究 の 目的:
- 完全にリンゴセルロース由来のエポキシ樹脂の閉環リサイクルを合成し,実証する.
- 新しいエポキシ樹脂システムの熱力学特性と再利用性を評価する.
主な方法:
- リンゴセルロース由来の前体:2,5-フランジカルボキシル酸 (DMFD) のジメチルエステル,4,4'-メチレンビス (cyclohexylamine) (MBCA),およびグリシドールを使用してエポキシ樹脂 (DGF/MBCA) の合成.
- ガラスの移行温度 (Tg) と貯蔵モジュールを含む熱力学的性質の特徴
- DMFD再生のための触媒のないメタノリシスとMBCAとグリシドール回収のためのアセトリシスの調査.
主要な成果:
- 合成されたDGF/MBCAは,Tgが170°Cで,貯蔵モジュールは25°Cで1.2GPaで,優れた熱力学特性を示した.
- エポキシ樹脂は効率的なメタノリシスを受け,原始のDMFDの90%を触媒なしで再生しました.
- その後のアセトリスにより,ダイアミンMBCAとグリシドールが再構成され,閉環リサイクルが可能になった.
結論:
- 高性能で固有のリサイクル性を持つ,完全にリンゴセルロース由来の新型エポキシ樹脂が成功裏に合成されました.
- 開発された材料は,従来のERTに持続可能な代替手段を提供し,廃棄に関連する環境問題に取り組んでいます.
- 鍵となるモノメアを再生する 閉環リサイクルプロセスは 複合材料におけるより持続可能なポリマー応用への道を切り開いています
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