Upcycling of Post-Consumer Polycaprolactone to Polyamides and Poly(ester amide)s via Aminolysis-Dehydrogenative Polymerization.

Yiwei Rao, Shuo Wen, Fangxin Zhao, Shiyu Shen, Chenglong Yu, Yanqing Peng, Yichao Lin, Changguang Yao

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Article in Polymer science & technology (Washington, D.C.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Yiwei RaoSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.

Shuo WenSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.

Fangxin ZhaoSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.

Shiyu ShenSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.

Chenglong YuJiangxi Province Zhengbai Technology Co., Ltd, Guixi 335499, China.

Yanqing PengSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.

Yichao LinState Key Laboratory of Coal Mine Disaster Prevention and Control, School of Safety and Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.ORCID https://orcid.org/0000-0003-4376-4505

Changguang YaoSchool of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.ORCID https://orcid.org/0000-0002-9564-4225

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Upcycling waste polyesters into valuable materials to address plastic pollution and reduce the waste of carbon resources is a necessary and highly challenging task. Herein, we present an "aminolysis-dehydrogenative polymerization" strategy that enables one-pot upcycling of polycaprolactone (PCL) into polyamides (PAs) and poly-(ester amide)-s (PEAs) in high yields with controllable ester-to-amide ratios and tunable functional moieties. Detailed mechanism analysis elucidates that the process involves four kinds of reactions: aminolysis, dehydrogenative cross-coupling of amine and alcohol, transesterification, and dehydrogenative self-coupling of alcohol. Significantly, the upcycling of post-consumer PCL into PAs and PEAs is also achieved, demonstrating a strong industrial application potential of this approach.

Indexed as

aminolysisdehydrogenative polymerizationpolyamidespolycaprolactonepoly(ester amide)supcycling

Identifiers

PMID42662388

DOI10.1021/polymscitech.6c00039

PMCPMC13520749

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.