形状メモリポリマー プログラム可能な回復開始
1State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.
Nature
|September 13, 2023
まとめ
この研究は 体の自然な温度に反応する 新しい形状変化ヒドロゲルを導入します 形状回復のためのプログラム可能な遅延を提供し,医療機器のための現在の形状変化ポリマーの制限を克服します.
科学分野:
- 材料科学
- ポリマー化学
- 生物医学工学
背景:
- 刺激に反応する形状変化ポリマーは ソフトロボティクスや医療機器などの 先進的な応用に不可欠です
- 外部トリガー (熱,光) により形状が変化するポリマーは,現実のシナリオでは特にインプラント可能なデバイスでは大きな課題を提示します.
- 現存するポリマーには 外部トリガーが必要で 自然な刺激を用いて 回復の開始を制御できない.
研究 の 目的:
- 自然に誘発されながら 積極的に制御できる 形状変化ポリマーを開発する
- 形状記憶ポリマーの自然なトリガーと制御可能な回復の相反する属性を克服するために.
- 先進的なデバイスアプリケーションの実装の障壁を軽減する素材を作成します.
主な方法:
- 段階分離を用いた4次元プリント可能な形状メモリヒドロゲルを開発した.
- 従来のポリマーにおける熱伝送とは異なる内部質量拡散が支配する形状変化運動を調査した.
- 装置のプログラム中に相分離の度合いを制御することによって,プログラム可能な回復開始遅延を設計した.
主要な成果:
- 液体ゲルは自然環境温度で形状の変化を示します.
- 段階分離の程度によって制御される,回復の開始における重要なプログラム可能な遅延が達成されました.
- 運動は内部質量拡散によって制御され 新しい制御メカニズムが提供されます
結論:
- この自然に誘発された形状記憶ポリマーは 調節可能な回復開始により実装の障壁を大幅に低減します
- この材料は,要求に応じた形状変化制御のためのユニークなソリューションを提供します.
- 段階分離と内部質量拡散は,高度な形状変化材料を設計するための新しい経路を提供します.
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