In this work, bio-based tyramine was exploited to prepare a novel phthalonitrile monomer (L-CN) with amorphous characteristics, sub-zero softening point (−16 °C) and high curing reactivity. Compared with the control compounds, it showed that amorphous structure and low softening point of L-CN cannot be simply attributed to the introduction of flexible aliphatic chain. It is proposed that the inhibited crystallization of the PN monomer can be understood by the multi-competitive supramolecular interactions as suggested by ¹HNMR, in-situ FTIR and molecular dynamics simulation. Furthermore, the cured resin exhibited excellent thermal and thermomechanical properties at relatively low post-cured temperature due to the strong nucleophilicity and mobility of the aliphatic amine.

在这项工作中，利用生物基酪胺制备了一种新型邻苯二甲腈单体 (L-CN)，该单体具有无定形特征、低于零的软化点 (-16 °C) 和高固化反应性。与对照化合物相比，表明L-CN的无定形结构和低软化点不能简单地归因于柔性脂肪链的引入。¹ HNMR、原位 FTIR 和分子动力学模拟表明，可以通过多竞争性超分子相互作用来理解 PN 单体的结晶受抑制。此外，由于脂肪胺的强亲核性和流动性，固化树脂在相对较低的后固化温度下表现出优异的热和热机械性能。