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Preparation of Biopolymer Aerogels Using Green Solvents
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ステレオコンプレクセーションと光ポリメリゼーションを組み合わせることで,生物分解性のある頑丈な水素ゲルを素早く in situ で形成します
Christine Hiemstra1, Wei Zhou, Zhiyuan Zhong
1Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, Institute for Biomedical Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
Journal of the American Chemical Society
|July 25, 2007
まとめ
この研究は,ステレオコンプレックス化と光ポリメリゼーションを組み合わせて,堅固で迅速に形成される水素ガスを生み出します. これらの高度なヒドロゲルは,強化された機械的特性と生物医学的なアプリケーションのための長期間の分解を提供します.
科学分野:
- バイオマテリアル科学 バイオマテリアル科学
- ポリマー化学のポリマー化学について
- 材料工学 材料工学とは
背景:
- ポリエチレングリコール-ポリラクチド (PEG-PLA) コポリマーのステレオコンプレックス化により,ヒドロゲルが形成されます.
- バイオメディカルアプリケーションでは,インシット形成ヒドロゲルが望ましい.
- クロスリンク方法の組み合わせは,ヒドロゲルの性質を高めることができます.
研究 の 目的:
- ステレオコンプレクセーションと光ポリメリゼーションを組み合わせて,堅固な水素ゲルを形成する in situ を迅速に開発する.
- メタクリラート機能化の位置がヒドロゲル特性に与える影響を調査する.
- 混合ヒドロゲルの機械的性質と分解プロフィールを評価する.
主な方法:
- メタクリラート機能化されたPEG-PLLAとPEG-PDLAスターブロック共ポリマーの設計と合成.
- コポリマー溶液を混合すると,ステレオ複合体のヒドロゲルの急速な形成.
- その後,ステレオ複合体の水素ゲルのフォトポリメリゼーションを行います.
- ハイドロゲル貯蔵モジュールの特徴,腫れ,および劣化行動.
主要な成果:
- 急速なヒドロゲル形成 (1-2分) が,ポリマー濃度12.5-17.5% (w/v) で達成される.
- ステレオ複合と光ポリメリゼーションの組み合わせにより,単一の方法と比較して,貯蔵モジュールは大幅に増加しました.
- 貯蔵モジュールは,ステレオコンプレクセーション時間とともに線形的に増加し,シネージーを示した.
- 光ポリメリゼーションは,非常に低いイニシアター濃度 (0.003 wt %) で有効です.
- 複合ヒドロゲルは,光ポリメリ化のみのヒドロゲル (1.5週間) と比べて,分解時間が長かった (3~16週間以上).
結論:
- 立体複合と光ポリメリゼーションの組み合わせは,in situで迅速に形成され,頑丈な水素ガスを作るための新しい戦略です.
- メタクリlate機能化の位置は,分解速度に影響します.
- これらの高度なヒドロゲルは,迅速な形成,機械的強度,制御された分解を必要とするアプリケーションに希望を示しています.
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