湿混によるリグニン/エポキシド化天然ゴム化合物:エポキシド化度が化合物のインターフェイスに与える影響
1Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing 100029, China.
Materials (Basel, Switzerland)
|August 28, 2025
まとめ
リグニンを含んだエポキシド化天然ゴム (ENR) の複合材料は,互換性と機械的性質が向上しています. 自然ゴムを改造することで,リグニンが強化される.
科学分野:
- 材料科学
- ポリマー化学
- バイオマスの利用
背景:
- 自然ゴム (NR) は防衛と産業に不可欠ですが,限界に直面しています.
- リグニンはバイオマスの材料で,ゴムの持続可能な充填剤/抗酸化剤として研究されています.
- 極性リグニンと非極性天然ゴムとの互換性は低い.
研究 の 目的:
- リグニンで満たされた天然ゴム複合材料の互換性と性能を向上させる.
- リグニン/エポキシド化天然ゴム (ENR) 複合材料に対するエポキシデーション度の影響を調査する.
- 複合材料の特性に対する混合方法の影響を評価する.
主な方法:
- ENR (25%と45%のエポキシデーション) を生成するために,甲酸と過酸化水素を用いた天然ゴムのインシットエポキシデーション.
- エタノルをフラキュラントとして使って,リンニン水溶液とENRを濡らして混合する.
- 複合材料の性質の包括的な特徴付け
主要な成果:
- エポキシデーションは,リグニンとENRのインターフェイス互換性を大幅に改善しました.
- 湿った混合は,ゴムマトリックス内のリグニンの分散性を高めました.
- 25%のエポキシデーションによるENRは,優れた機械的特性 (張力強度が29. 4から36. 2MPaに増加) と熱安定性を示した.
結論:
- エポキシデーションは,自然ゴムとリグニンの互換性を改善するための効果的な戦略です.
- リグニンはENR複合材料の補強充填料として作用する.
- この研究は,高性能のリグニン/ENR複合体を作るための新しい方法を示しています.
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