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一个模型氨基化宁化合物的交叉连接反应作为构建宁基生物粘合剂热固化聚合物的平台
Saman Ghahri1, Eko Setio Wibowo1, Byung-Dae Park1
1Department of Wood and Paper Science, Kyungpook National University, Daegu 41566, Republic of Korea.
Bioresource technology
|September 19, 2024
概括
强力宁废物可以用于生物粘合剂. 这项研究使用了NMR来了解素交叉连接反应,证实了甲链接和胺/胺胺键的形成,以改善生物粘合剂的开发.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 有机化学 有机化学
背景情况:
- 每年有数百万的实力木质素被浪费.
- 由于对交叉连接反应的理解不充分,宁对热固化生物粘合剂的潜力受到阻碍.
- 从红素开发可持续的生物粘合剂对于废物回收利用至关重要.
研究的目的:
- 为了阐明一种模型素化合物 - - 瓜亚基-β-瓜亚基 (GGE) - - 的交联反应.
- 调查用甲和二甲基胺 (DETAM) 进行一步氧甲基化/氨基化.
- 探索使用液体NMR技术的glyoxal和DETAM的一步氧化/氨基化.
主要方法:
- 使用液体核磁共振 (NMR) 光谱,包括1H NMR,13C NMR,2D 1H-13C HSQC和2D 1H-15N HSQC.
- 分析了GGE与甲/DETAM和glyoxal/DETAM的交联反应.
- 解释NMR光谱以识别交叉连接期间形成的特定化学键和链接.
主要成果:
- 2D 1H-13C HSQC 核磁共振证实了 -CH2-NH-链接的存在,表明甲键的形成.
- 在1H 2.6-3.6/13C 40-60 ppm时,观察到 -CH2-NH- 的化学变化.
- 2D 1H-15N HSQC NMR在特定的化学转移 (1H 7.8/15N 110 ppm和1H 8.07/15N 121.5 ppm) 时清楚地检测到胺基和胺基键的形成.
结论:
- 该研究成功阐明了与生物粘合物形成相关的GGE中的关键交联反应.
- 核磁共振分析证实了基本甲链接和胺/氨基胺键的形成.
- 这些发现为优化基于素的热固化生物粘合剂提供了基本的见解.
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