{"title":"Bio-based Recyclable Epoxy Vitrimers Prepared by The Combined Action of Cyclic Boroxine and Acylhydrazone Bonds","authors":"Yanna Zhao, Xiaowei Bai, Yingying Zhang, Yuqi Wang, Yiqing Li, Shuai Yang","doi":"10.1007/s10924-024-03480-6","DOIUrl":null,"url":null,"abstract":"<div><p>The preparation of high-performance recyclable epoxy vitrimer from bio-based feedstocks is of great industrial significance. Based on the above considerations, in this paper, we report a reaction of curing a bio-based epoxy monomer, propanetriol triglycidyl ether (GTE), with vanillin-derived diphenol monomer (VD) and 3-aminophenylboronic acid (M-APBA) as a curing agent, which resulted in the preparation of epoxy vitrimer films (EVB-X) with acylhydrazone bonds and cyclic boroxine dual dynamic response. Among them, the diphenol monomer VD supplies the flexible structure of the film, while the film showed a gradual increase in the boroxine six-membered ring structure with the gradual increase in the ratio of M-APBA, and the thermal and mechanical properties of the films are also gradually improving. By varying the ratio of VD to M-APBA in the material, EVB-3 was the most thermally stable, while T<sub>g</sub> was measured at 45 °C, the highest tensile strength (57.40 MPa), and the largest cross-linking density (3271 mol/m<sup>3</sup>) among the four groups of films obtained from EVB-X films. In addition, the EVB films had excellent triple memory and could be largely degraded in acidic DMF and DMSO, with a gel content of 86.74% measured with EVB-3. Notably, the EVB scratches were completely healed at 100 °C for 1 h, indicating that EVB have excellent self-repairing properties, while the tensile strength could be recovered up to 28.98 MPa after heat treatment, and the strain repair rate could reach up to 89.42%, which provides good reprocessability.</p></div>","PeriodicalId":659,"journal":{"name":"Journal of Polymers and the Environment","volume":"33 3","pages":"1254 - 1266"},"PeriodicalIF":4.7000,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Polymers and the Environment","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10924-024-03480-6","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0
Abstract
The preparation of high-performance recyclable epoxy vitrimer from bio-based feedstocks is of great industrial significance. Based on the above considerations, in this paper, we report a reaction of curing a bio-based epoxy monomer, propanetriol triglycidyl ether (GTE), with vanillin-derived diphenol monomer (VD) and 3-aminophenylboronic acid (M-APBA) as a curing agent, which resulted in the preparation of epoxy vitrimer films (EVB-X) with acylhydrazone bonds and cyclic boroxine dual dynamic response. Among them, the diphenol monomer VD supplies the flexible structure of the film, while the film showed a gradual increase in the boroxine six-membered ring structure with the gradual increase in the ratio of M-APBA, and the thermal and mechanical properties of the films are also gradually improving. By varying the ratio of VD to M-APBA in the material, EVB-3 was the most thermally stable, while Tg was measured at 45 °C, the highest tensile strength (57.40 MPa), and the largest cross-linking density (3271 mol/m3) among the four groups of films obtained from EVB-X films. In addition, the EVB films had excellent triple memory and could be largely degraded in acidic DMF and DMSO, with a gel content of 86.74% measured with EVB-3. Notably, the EVB scratches were completely healed at 100 °C for 1 h, indicating that EVB have excellent self-repairing properties, while the tensile strength could be recovered up to 28.98 MPa after heat treatment, and the strain repair rate could reach up to 89.42%, which provides good reprocessability.
期刊介绍:
The Journal of Polymers and the Environment fills the need for an international forum in this diverse and rapidly expanding field. The journal serves a crucial role for the publication of information from a wide range of disciplines and is a central outlet for the publication of high-quality peer-reviewed original papers, review articles and short communications. The journal is intentionally interdisciplinary in regard to contributions and covers the following subjects - polymers, environmentally degradable polymers, and degradation pathways: biological, photochemical, oxidative and hydrolytic; new environmental materials: derived by chemical and biosynthetic routes; environmental blends and composites; developments in processing and reactive processing of environmental polymers; characterization of environmental materials: mechanical, physical, thermal, rheological, morphological, and others; recyclable polymers and plastics recycling environmental testing: in-laboratory simulations, outdoor exposures, and standardization of methodologies; environmental fate: end products and intermediates of biodegradation; microbiology and enzymology of polymer biodegradation; solid-waste management and public legislation specific to environmental polymers; and other related topics.