原子力顕微鏡 ナノメカニカルマッピング 化学交換反応によるネットワーク間の界面拡大を視覚化
Changfei He1, Shaowei Shi1, Xuefei Wu1
1Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites , Beijing University of Chemical Technology , Beijing 100029 , China.
Journal of the American Chemical Society
|May 19, 2018
まとめ
エポキシネットワークにおけるインターフェイスの拡大は,混合特性を有する新しい材料を生み出します. ナノメカニカルマッピングは交換反応を明らかにし,反応運動と活性化エネルギーの測定を可能にしました.
科学分野:
- ポリマー科学
- 材料科学
- ナノテクノロジー
背景:
- 複合材料のインターフェイス特性を理解することは極めて重要です.
- エポキシ網は接着剤やコーティングで広く使用されています.
- ポリマーネットワークの差分モジュールは,ユニークなインターフェイス行動につながる可能性があります.
研究 の 目的:
- 異なるモジュールを持つ2つのエポキシネットワーク間のインターフェイス拡大をナモメカニカルにマッピングする.
- 階層化された性質を持つインターフェイスゾーンの形成を調査する.
- 交換反応によるセグメンタル・インターミキシングの運動と活性化エネルギーを決定する.
主な方法:
- インターフェイスの拡大を分析するナノメカニカルマッピング
- 時間と温度におけるモジュール変化の測定
- 交換反応の運動と活性化エネルギーの決定
主要な成果:
- インターフェイスの拡大は,濃度と性質のグラデントを持つゾーンを作成します.
- 新しいネットワークは,両方のオリジナルのネットワークからセグメンタル組成で形成されます.
- セグメントレベルでの混合は交換反応によって起こります.
- 交換反応の運動を測定し,活性化エネルギーを決定した.
結論:
- 不同なエポキシネットワークのインターフェイスの拡大は,グラデントゾーンと新しい混合ネットワークを生成します.
- ナノメカニカルマッピングは,セグメンタル・インターミキシングプロセスに関する洞察を提供します.
- この研究は,この混合現象の反応運動と活性化エネルギーを定量化します.
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