Bio-based Recyclable Epoxy Vitrimers Prepared by The Combined Action of Cyclic Boroxine and Acylhydrazone Bonds

IF 4.7 3区 工程技术 Q2 ENGINEERING, ENVIRONMENTAL
Yanna Zhao, Xiaowei Bai, Yingying Zhang, Yuqi Wang, Yiqing Li, Shuai Yang
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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.

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来源期刊
Journal of Polymers and the Environment
Journal of Polymers and the Environment 工程技术-高分子科学
CiteScore
9.50
自引率
7.50%
发文量
297
审稿时长
9 months
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.
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