ダイナミックN,S-アセタル化学による共性適応ネットワーク:リサイクル可能なCO2ベースのサーモセットへ
Thomas Habets1, Guillem Seychal2,3, Marco Caliari1,3
1Center for Education and Research on Macromolecules (CERM), CESAM Research Unit, University of Liege, Sart-Tilman B6a, 4000 Liege, Belgium.
Journal of the American Chemical Society
|November 9, 2023
まとめ
この研究では,再生可能な非イソシアネートポリウレタンを生成するために,CO2源のモノマーを使用して,新しいスケーラブルなポリマー化学を導入しています. これらの材料は調整可能な特性を持ち,使用寿命の終わりに複数のリサイクルオプションを提供し,プラスチック廃棄物の懸念を解決します.
科学分野:
- ポリマー化学
- 材料科学
- 持続可能な化学
背景:
- プラスチックの需要と環境への懸念が高まると 再利用可能な新しいポリマープラットフォームが 必要になります
- 現在のポリマーの生産は,性能と寿命の終わりの循環性の両方を達成する上で課題に直面しています.
研究 の 目的:
- 円形の非イソシアネートポリウレタンネットワークを生産するための簡単でスケーラブルなダイナミック化学を開発する.
- これらの新しいポリマーネットワークの再生可能性と調整可能な機械的性質を調査する.
主な方法:
- CO2源のアルキリデンオクサゾリドンとポリチオルの共ポリメリゼーション
- ポリマー製剤の範囲における機械的性質の特徴化
- 機械的,化学的,アップサイクリングのリサイクルシナリオの実証
主要な成果:
- N,S-アセタル結合を埋め込んだ円形の非イソシアネートポリウレタンの合成に成功した.
- エラストマーから硬質プラスチックまで 幅広い機械的特性を達成しました
- 化学的リサイクルとアップサイクリングの能力に加えて,性能の劣化なしに,複数のサイクル (≥10回) を通して堅牢なリサイクル性があることが実証されています.
結論:
- オクサゾリドンをベースにしたダイナミックなポリマーネットワークのための新しい,簡単でスケーラブルな化学プラットフォームが確立されました.
- 開発された材料は,調節可能な性質と,使用終了後のリサイクル経路が複数あり,複合材料を含む持続可能な材料にとって大きな可能性を秘めています.
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