Recycling Polyester and Polycarbonate Plastics with Carbocation Lewis Acidic Organocatalysts

IF 5.1 Q1 POLYMER SCIENCE

ACS Macro Letters Pub Date : 2025-03-08 DOI:10.1021/acsmacrolett.5c00054

Nan Wang, Qiao Zhang, Zhiqiang Sun, Han Zhang, Chenyang Hu, Hai Sun, Xuan Pang, Xuesi Chen

引用次数: 0

Abstract

The effective management of plastic waste is critical for environmental sustainability. This work explores the use of carbocation catalysts for the recycling of common polyesters and polycarbonates through alcoholysis. We demonstrate complete depolymerization of end-of-life materials and investigate the relationship between the catalytic reactivity and the structural features of the carbocation compounds, including the cations and their counteranions. Carbocations function as Lewis acids, facilitating the interaction with carbonyls in polymer chains. Moreover, our approach enables the hierarchical degradation of the polyester blends. This research not only elucidates the catalytic role of carbocations in the alcoholysis of these polymers, but also establishes a metal-free process for the efficient recycling of waste plastics.

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使用碳位路易斯酸有机催化剂回收聚酯和聚碳酸酯塑料

塑料废物的有效管理对环境的可持续性至关重要。本研究探讨了碳阳离子催化剂在普通聚酯和聚碳酸酯醇解回收中的应用。我们展示了报废材料的完全解聚，并研究了催化反应活性与碳正离子化合物的结构特征之间的关系，包括阳离子和它们的反阴离子。碳正离子起路易斯酸的作用，促进与聚合物链上羰基的相互作用。此外，我们的方法使聚酯共混物的分层降解成为可能。本研究不仅阐明了碳阳离子在这些聚合物醇解中的催化作用，而且建立了废塑料高效回收的无金属工艺。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Macro Letters 化学-

CiteScore

10.40

自引率

3.40%

发文量

209

审稿时长

1 months

期刊介绍： ACS Macro Letters publishes research in all areas of contemporary soft matter science in which macromolecules play a key role, including nanotechnology, self-assembly, supramolecular chemistry, biomaterials, energy generation and storage, and renewable/sustainable materials. Submissions to ACS Macro Letters should justify clearly the rapid disclosure of the key elements of the study. The scope of the journal includes high-impact research of broad interest in all areas of polymer science and engineering, including cross-disciplinary research that interfaces with polymer science. With the launch of ACS Macro Letters, all Communications that were formerly published in Macromolecules and Biomacromolecules will be published as Letters in ACS Macro Letters.