粒子の接触によって引き起こされるポリメリゼーション:物質合成のための静止状態トリガー

Kristin M Hutchins^1,2, Nina M Sekerak¹, Jeffrey S Moore^1,2

¹Department of Chemistry, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States.

Journal of the American Chemical Society

|September 6, 2016

まとめ

補完的な機能化された粒子は接触時に急性ポリメリゼーションを開始し凝固のような構造を作り出しますこの空間的に制御されたダブル・イニシアター・システムは自己治癒の応用が期待されています

科学分野:

材料科学
ポリマー化学
化学工学

背景:

結合された反応性グループを持つ粒子の分散は,同質な溶液と比較して独特の化学的行動を示す.
粒子同士の接触により双分子反応がインターフェイスで局所化され新しい物質の性質が生まれます
この局所的な反応性は血液の凝固のような生物学的プロセスに類似しており自己治癒の応用の可能性を示唆しています

研究の目的:

2つの補完的な共同イニシアターの近さによって開始された急性ポリメリゼーション反応を実証する.
機能化された基板とポリマービーズを使用して,ポリメリゼーションの空間制御を調査する.
このシステムの自己治癒材料の可能性を探求するためです

主な方法:

コンプリメンタリー機能化された粒子 (ビーズ) と結合した共イニシアター (ディメチラニリンとベンゾイル過酸化物) を利用した.
これらの粒子のインターフェース接触によって誘発されたアクリラートモノメールの根性ポリメリゼーションを調査した.
静止状態でエスカフォルドの形成を観察した.

主要な成果:

ダイメチラニリンで機能化されたインターフェースがベンゾイル過酸化物との接触時にのみ,アクリラートモノマーのポリメリゼーションが成功しました.
補完的な機能を持つビーズとポリマーから成る"凝固状"の支架が形成されました.
スケファードの形成は,ビーズの静止状態に依存していた.

結論:

局所的なポリメリゼーションのために空間的に制御された二重イニシアターシステムを設計することができます.
この発見は新しい自己修復戦略と素材デザインの道を開きます
このアプローチは,高度な機能的な材料を作るための新しいモチーフを提供します.

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