四川大学朱剑波研究组取得一项新突破。他们的研究发现开环聚合可以获得具有化学可回收性的高性能脂肪族芳香族聚酰胺。2025年4月9日出版的《德国应用化学》杂志发表了这项成果。

在此，课题组报告了一种简单的方法来构建一系列具有不同功能的苯二甲酸基己内酰胺（BLMR）。这些BLMR单体经过了自动和控制良好的开环聚合，得到了热稳定性高、耐水性强、机械性能可调的P（BLMR）产品。令人印象深刻的是，P（BLMR）在100用t-BuOK和La[N(SiMe3)2]3的混合催化剂，在150°C下形成闭环循环。这些半芳香族聚酰胺的聚合和可回收性的精确控制促进了可持续的循环经济，同时提供了获得具有可调热学和机械性能以及增强耐水性的高性能材料的潜力。

据了解，聚酰胺（PAs）已成为最重要的工程热塑性塑料之一，但如何将其化学回收为单体仍是一个长期的挑战。

附：英文原文

Title: Ring-Opening Polymerization Enables Access to High-Performance Aliphatic-Aromatic Polyamides with Chemical Recyclability

Author: Xiang-Ting Tang, Jia-An-Qi Zhou, Yi-Min Tu, Hua-Zhong Fan, Meng-Yuan Wang, Qing Cao, Zhongzheng Cai, Jian-Bo Zhu

Issue&Volume: 2025-04-09

Abstract: Although polyamides (PAs) have served as one of the most important engineering thermoplastics, it remains a long-standing challenge for chemical recycling of PAs to monomers. Herein, we report a facile approach to construct a series of benzo-fused caprolactams with various functionalities (BLMR). These BLMR monomers underwent robust and well-controlled ring-opening polymerization to afford P(BLMR) products with high thermal stability, enhanced water resistance, and tunable mechanical properties. Impressively, chemical recycling of P(BLMR) to monomer could be accomplished with excellent efficiency in dilute solution at 100150 °C with a mixed catalyst of t-BuOK and La[N(SiMe3)2]3, thus establishing a closed-loop circularity. The precise control of the polymerization and the recyclability of these semi-aromatic polyamides promote a sustainable circular economy while offering the potential to access high-performance materials with tunable thermal and mechanical properties and enhanced water resistance.

DOI: 10.1002/anie.202505310

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202505310