C−H結合を含むアリファティックポリマーの広範なクロスリンク
Mathieu L Lepage1, Chakravarthi Simhadri1, Chang Liu1
1Department ofChemistry, University of Victoria, Victoria, BC V8W-3V6, Canada.
Science (New York, N.Y.)
|November 16, 2019
まとめ
新しいbis- diazirine分子は,カルベンの挿入とC- H活性化によって制御されたポリマークロスリンクを可能にします. この方法は,低機能性の難しいタイプを含む様々なポリマーの機械的性質と粘着性を高めます.
科学分野:
- ポリマー化学
- 材料科学
- 有機合成
背景:
- 交互結合ポリマーは 機械的強度と耐腐蝕性を高めます
- 低機能ポリマーの制御されたクロスリンクは依然として大きな課題です.
- 既存の方法では,多くの場合,制御が制限された高エネルギープロセスが必要です.
研究 の 目的:
- 多種多様なポリマーのための新しいクロスリンク方法を開発する.
- 軽い条件下で制御されたクロスリンクを可能にします.
- 既存のポリマークロスリンク技術の限界を克服する.
主な方法:
- ビスディアジリン分子の合理的な設計
- 軽い条件下でビスディアジリンをカルベンに分解する.
- 生成されたカルベンを用いた二重C-H活性化によるクロスリンクポリマー.
主要な成果:
- 複数のポリマー基板の交互結合が成功していることが証明された.
- 低機能のポリマーであるクロスリンクングポリプロピレンの有用性を示した.
- 表面エネルギーが低い材料の粘着性を改善し,ポリエチレン繊維を強化するためにクロスリンク方法が適用されました.
結論:
- 設計されたビスディアジリン分子は,ポリマークロスリンクの汎用的かつ制御可能な方法を提供します.
- このアプローチは,ポリマーの性質を変更し,新しいアプリケーションを可能にするために重要な進歩を提供します.
- この方法は,以前はクロスリンクが難しいポリマーを含む幅広いポリマーに有効です.
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