气候变化领域集成服务门户(CCPortal): Recyclable thermoset hyperbranched polymers containing reversible hexahydro-s-triazine

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DOI	10.1038/s41893-019-0444-6
	Recyclable thermoset hyperbranched polymers containing reversible hexahydro-s-triazine
	Xu Z.; Liang Y.; Ma X.; Chen S.; Yu C.; Wang Y.; Zhang D.; Miao M.
发表日期	2020
ISSN	2398-9629
起始页码	29
结束页码	34
卷号	3 期号:1
英文摘要	Thermoset materials containing about 70 wt% epoxy resin are widely used in critical aerospace and wind power structures, generating enormous amounts of waste (such as offcuts and damaged, worn and disposed parts) that affect both the environment and the sustainable development of human society. Owing to their irreversible crosslinked networks, thermoset materials pose major challenges for rapid degradation and high-efficiency recycling. Here we report the synthesis of thermoset hyperbranched polymers (HER-HTn) containing a reversible heterocyclic structure (hexahydro-s-triazine) that can be degraded under relatively mild conditions. The cured HER-HTn exhibit excellent mechanical and thermal properties, as well as rapid degradability in more environmentally friendly phosphoric acid solutions. Controlled degradation experiments show that the cured HER-HTn can be completely digested at relatively low temperatures (90 °C) in a short period (2 h) to recover 2-aminobenzyl alcohol at a high recycling efficiency (85.1%). The recovered 2-aminobenzyl alcohol can then be used to produce the initial hexahydro-s-triazine monomer, which demonstrates the reversibility of the hexahydro-s-triazine structure and recoverability of the thermoset hyperbranched polymers. This investigation provides a method for the synthesis of a degradable thermoset matrix and the cyclic use of high-value materials in the thermoset and its composites. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Curing; Dendrimers; Efficiency; Epoxy resins; Polyols; Recycling; Sustainable development; Synthesis (chemical); Wind power; 2-Aminobenzyl alcohol; Controlled degradation; Cross-linked networks; Heterocyclic structures; Hyperbranched polymers; Mechanical and thermal properties; Rapid degradability; Recycling efficiency; Thermosets
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163567
作者单位	Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, Hubei R&D Center of Hyperbranched Polymers Synthesis and Applications, South-Central University for Nationalities, Wuhan, China; Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, China; CSIRO Manufacturing, Waurn Ponds, VIC, Australia
推荐引用方式 GB/T 7714	Xu Z.,Liang Y.,Ma X.,et al. Recyclable thermoset hyperbranched polymers containing reversible hexahydro-s-triazine[J],2020,3(1).
APA	Xu Z..,Liang Y..,Ma X..,Chen S..,Yu C..,...&Miao M..(2020).Recyclable thermoset hyperbranched polymers containing reversible hexahydro-s-triazine.Nature Sustainability,3(1).
MLA	Xu Z.,et al."Recyclable thermoset hyperbranched polymers containing reversible hexahydro-s-triazine".Nature Sustainability 3.1(2020).