MOE Key Laboratory of Macromolecular Synthesis and Functionalization, International Research Center for X Polymers, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
Center of Chemistry for Frontier Technologies, Zhejiang University, Hangzhou, 310027, China.
Angew Chem Int Ed Engl. 2023 Mar 20;62(13):e202219251. doi: 10.1002/anie.202219251. Epub 2023 Feb 17.
The green revolution in plastics should be accelerated due to growing sustainability concerns. Here, we develop a series of chemically recyclable polymers from the first reported cascade polymerization of H O, COS, and diacrylates. In addition to abundant feedstocks, the method is efficient and air-tolerant, uses common organic bases as catalysts, and yields polymers with high molecular weights under mild conditions. Such polymers, structurally like polyethylene with low-density in-chain polar groups, manifest impressive toughness and ductility comparable to high-density polyethylene. The in-chain ester group acts as a breaking point, enabling these polymers to undergo chemical recycling through two loops. The structures and properties of these polymers also have an immeasurably expanded range owing to the versatility of our method. The readily available raw materials, facile synthesis, and high performance make these polymers promising prospects as sustainable materials in practice.
由于可持续发展的担忧日益加剧，塑料行业的绿色革命应该加速。在这里，我们首次报道了 H2O、COS 和二丙烯酸酯的级联聚合，开发了一系列可化学回收的聚合物。除了丰富的原料外，该方法高效、耐空气，使用常见的有机碱作为催化剂，在温和的条件下得到高分子量的聚合物。这些聚合物的结构类似于具有低密度链内极性基团的聚乙烯，表现出令人印象深刻的韧性和延展性，可与高密度聚乙烯相媲美。链内酯基充当断裂点，使这些聚合物能够通过两个循环进行化学回收。由于我们方法的多功能性，这些聚合物的结构和性能也有了无限扩展的可能。这些聚合物具有易得的原料、简便的合成和优异的性能，有望成为实际应用中可持续发展的材料。
