A facile strategy to improve the strength and toughness of high-performance polymers and recycling by dynamic Ni-coordination crosslinking
A facile strategy to improve the strength and toughness of high-performance polymers and recycling by dynamic Ni-coordination crosslinking
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DOI：
10.1177/09540083231204218
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发表时间：
2023-09
影响因子：
2.1
通讯作者：
Lei Li;Rui Yuan;Sucheng Yang;Li Yang;Guan-jun Chang;Ying Huang
中科院分区：
文献类型：
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作者：
Lei Li;Rui Yuan;Sucheng Yang;Li Yang;Guan-jun Chang;Ying Huang
提高高性能聚合物的力学性能和热稳定性具有重要意义。通过钯催化的C-C偶联反应成功制备了一种具有高拉伸强度和优异耐热性的新型配位聚合物薄膜（Ni/PPy）。对于新合成的聚合物薄膜，联吡啶在合成过程中结合到聚合物链中，随后通过乙酸镍进行交联。更重要的是，Ni配位可以通过外部焦磷酸盐去除以回收线性聚合物，从而赋予聚合物可回收性。该策略有望成为提高高性能聚合物材料机械性能和可回收性的有效手段。
It is of great significance to enhance mechanical properties and thermal stability of high-performance polymers. A new coordination polymer film (Ni/PPy) with high tensile strength and excellent heat resistance has been successfully prepared via a palladium-catalyzed C-C coupling reaction. For newly synthesized polymer film, bipyridine is incorporated into polymer chains during the synthesis process and subsequently crosslinked by nickel acetate. More importantly, Ni-coordination can be removed by external pyrophosphate to recover the linear polymer, which endows the polymer with recyclability. This strategy is expected to be an effective means for increasing the mechanical properties and recyclability of high-performance polymer materials.