Lin Ting-Wei, Padilla-Vélez Omar, Kaewdeewong Parin, LaPointe Anne M, Coates Geoffrey W, Eagan James M
Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States.
School of Polymer Science and Polymer Engineering, The Goodyear Polymer Science Building, University of Akron, Akron, Ohio 44325-3909, United States.
Chem Rev. 2024 Aug 28;124(16):9609-9632. doi: 10.1021/acs.chemrev.4c00047. Epub 2024 Jul 25.
Recycling mixed polyolefin plastics is a significant challenge due to the limitations in sorting and degraded mechanical properties of blends. Nonreactive compatibilization by adding a small amount of polymeric additive is a widespread approach to restoring the performance and value of recycled plastics. Over the past several decades, synthetic advances have enabled access to low-cost copolymers and precision architectures for deepening the understanding of compatibilization mechanisms in semicrystalline polyolefins. This review covers the design parameters of a polymeric compatibilizer, the testing of blends, the synthetic methods of producing economically viable additives, and surveys the literature of blends of compatibilized HDPE, LLDPE, LDPE, and iPP. From this, readers should gain a comprehension of the polymer mechanics, synthesis, and macromolecular engineering of processable polyolefin blends, along with the field's future directions.
由于混合聚烯烃塑料在分类方面存在局限性以及共混物机械性能退化，回收此类塑料是一项重大挑战。添加少量聚合物添加剂进行非反应性增容是恢复回收塑料性能和价值的一种广泛采用的方法。在过去几十年中，合成技术的进步使得人们能够获得低成本共聚物和精确结构，以加深对半结晶聚烯烃增容机理的理解。本综述涵盖了聚合物增容剂的设计参数、共混物的测试、生产具有经济可行性添加剂的合成方法，并对增容高密度聚乙烯（HDPE）、线性低密度聚乙烯（LLDPE）、低密度聚乙烯（LDPE）和等规聚丙烯（iPP）共混物的文献进行了综述。据此，读者应能理解可加工聚烯烃共混物的聚合物力学、合成及大分子工程，以及该领域的未来发展方向。
