作者：Rong Huang, Longtao Wang, Binbo Wang, Shuaiqi Yang, Shuai Du, Shanshan Dai,Fengyuan Zhang,Songqi Ma*
关键字：动态共价交联, 塑料, 混合塑料, 升级回收, 循环利用, 再加工性
论文来源：期刊
具体来源：Macromolecules
发表时间：2026年

The effective upcycling of mixed plastic waste is hindered by polymer immiscibility and the lack of scalable compatibilization strategies. Herein, we report a solvent-free, one-pot reactive extrusion process that transforms heterogeneous plastic blends─including postconsumer waste─into high-performance covalent adaptable networks using commercially available biosourced additives (itaconic anhydride and d-sorbitol). This integrated approach simultaneously induces chain scission, radical grafting, and dynamic cross-linking, achieving intrinsic catalysis and exceptional interfacial adhesion without presynthesized compatibilizers. The resulting materials exhibit a 221% increase in tensile strength (from 8 to 25.8 MPa) and 10-fold enhancement in fracture toughness for PP/PET blends, while retaining >90% of their mechanical properties after three reprocessing cycles. The strategy is universal across diverse systems (PP/PET, PE/PET, PP/PC, PE/ABS/PET), demonstrating broad applicability. Artificial intelligence-assisted life cycle assessment reveals significant reductions in greenhouse gas emissions compared to conventional recycling or virgin production. This work presents a scalable, green, and economically viable pathway for transforming plastic waste into circular, high-value materials, bridging laboratory innovation with industrial implementation.

全文链接：https://doi.org/10.1021/acs.macromol.6c00344