リンニンがフェノール・リゾルシノール・フォーマルアルデヒド樹脂粘着剤の粘着性能を向上させ,ホルムアルデヒド排出量を減少させる役割
Pirda Maharani Nafisah1, Eko Setio Wibowo2, Mahdi Mubarok1
1Department of Forest Products Science and Technology, Bogor Agricultural University, Bogor, Indonesia.
International journal of biological macromolecules
|August 31, 2025
まとめ
この研究は,フェノール-リゾルシノール-フォーマルアルデヒド (PRF) 樹脂を,フェノルをリグニンで部分的に置換することによって強化する. リグニン改変型PRFは,木材製品の性能を改善し,フリーフェノールに関連する環境リスクを軽減します.
科学分野:
- 材料科学
- ポリマー化学
- 持続可能な素材
背景:
- フェノール・リゾルシノール・フォーマルアルデヒド (PRF) 樹脂は,木材製品における重要な接着剤である.
- PRF樹脂の冷圧固化には,反応しないフリーフェノールなどの課題があり,反応性に影響を及ぼし,健康に危険性があります.
- 化石ベースのフェノールへの依存を減らすために 持続可能な代替手段が必要なのです
研究 の 目的:
- PRF樹脂におけるフェノールとリグニンの部分的置換を調査する.
- 樹脂の特性と性能に対するリグニン改変の影響を評価する.
- 環境への利害を評価するため 具体的にはホルムアルデヒドの排出量を減らすことです
主な方法:
- PRF樹脂製剤でフェノルを異なる割合のリグニン (10〜30%) で部分的に置き換える.
- 改造されたPRF樹脂の特性 (粘度,反応性,凝固強度)
- 改造樹脂で結合されたラミネートファニール (LVL) の評価,粘着とホルムアルデヒドの排出を評価する.
主要な成果:
- リグニンの置換 (10~30%) はPRF樹脂の粘度,反応性,凝固力を改善した.
- メチレン結合の増加が観察され,クロスリンクの強化とより強い粘着結合を示した.
- リグニン改変PRF樹脂と結合したLVLは,優れた粘着性と,著しく低いホルムアルデヒド排出量を示した.
結論:
- フェノルをリグニンで部分的に代用することは,PRF樹脂の性能を向上させるための実行可能な戦略です.
- リグニン改性PRF樹脂は,木材の粘着剤に持続可能で環境に優しい代替品を提供します.
- このアプローチは,環境と健康上の懸念を緩和しながら,粘着性の特性を改善します.
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