超分子ナノファイバーに柔軟なポリマー鎖の多価組立

Christopher B Cooper¹, Jiheong Kang¹, Yikai Yin²

¹Department of Chemical Engineering, Stanford University, Stanford, California 94305, United States.

Journal of the American Chemical Society

|September 9, 2020

まとめ

ダイナミックな結合を持つ合成ポリマーは自己組織化してナノファイバーとなり材料の性質を高めますこの生体模倣アプローチは,高度な機能材料の機械的強度と加工能力を向上させます.

科学分野:

材料科学
ポリマー化学
超分子化学

背景:

自然はポリマーの階層的な構造を精密な機能のために利用し多くの場合弱い相互作用によって駆動されます
合成ポリマーは先進的な材料の設計に自然の戦略を模倣できます

研究の目的:

超分子ナノファイバーにダイナミックな結合を持つ合成の柔軟なポリマー鎖の自己組み立てを調査する.
この組み立てプロセスを支配する構造-機能関係とその物質特性への影響を理解する.

主な方法:

周期的に配置されたダイナミックな結合を持つ柔軟なポリマー鎖の合成
モジュールとフローダイナミクスを含む,散発膜の特性.
構造-機能関係を分析するための粗粒子の分子動力学シミュレーション.

主要な成果:

ポリマーの鎖は臨界絡み分子量以下で集団的に超分子ナノファイバーに組み合わされます
ナノファイバーの形成は,大量フィルムモジュール (数次元のオーダー) を著しく増加させる.
溶液の処理性を維持しながら,端末の流れの開始は100 °C以上遅れています.

結論:

多価ポリマー鎖の協同組成は階層的な超分子構造につながります
この生体模倣アプローチは機能的な材料を改良した機械的性質で設計するための経路を提供します
構造と機能の関係を理解することは,自己組み立てポリマー材料を設計する上で鍵となるものです.

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