Si-Qi Wang , Long-Hai Liu , Kun Li , Wei Xiong , Hua-Zhong Fan , Qing Cao , Zhongzheng Cai , Jian-Bo Zhu
{"title":"Implementing a sulfur-substitution approach toward a high-performance recyclable polythioester†","authors":"Si-Qi Wang , Long-Hai Liu , Kun Li , Wei Xiong , Hua-Zhong Fan , Qing Cao , Zhongzheng Cai , Jian-Bo Zhu","doi":"10.1039/d4py01425a","DOIUrl":null,"url":null,"abstract":"<div><div>Developing new chemically recyclable polymers is highly demanded for a circular plastic economy. Herein, we implement a sulfur-substitution approach for improving the chemical recyclability and material performance of polycaprolactone (PCL). This thiocaprolactone (tCL) displayed excellent reactivity towards ring-opening polymerization, affording P(tCL) products with high thermal stability (<em>T</em><sub>d</sub> = 330 °C), high air stability, high crystallinity, and outstanding mechanical and transport properties (<em>σ</em><sub>B</sub> = ∼20 MPa, <em>ε</em><sub>B</sub> = ∼600%, <em>P</em>O<sub>2</sub> = 0.38 Barrer) comparable to commercial low-density polyethylene. Impressively, chemical recycling of P(tCL) to its monomer could be accomplished with excellent yield and purity, thus establishing its circular life cycle.</div></div>","PeriodicalId":100,"journal":{"name":"Polymer Chemistry","volume":"16 8","pages":"Pages 987-993"},"PeriodicalIF":3.9000,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S175999542500021X","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/1/16 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
Developing new chemically recyclable polymers is highly demanded for a circular plastic economy. Herein, we implement a sulfur-substitution approach for improving the chemical recyclability and material performance of polycaprolactone (PCL). This thiocaprolactone (tCL) displayed excellent reactivity towards ring-opening polymerization, affording P(tCL) products with high thermal stability (Td = 330 °C), high air stability, high crystallinity, and outstanding mechanical and transport properties (σB = ∼20 MPa, εB = ∼600%, PO2 = 0.38 Barrer) comparable to commercial low-density polyethylene. Impressively, chemical recycling of P(tCL) to its monomer could be accomplished with excellent yield and purity, thus establishing its circular life cycle.
期刊介绍：
Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.
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