气候变化领域集成服务门户(CCPortal): Design of next-generation cross-linking structure for elastomers toward green process and a real recycling loop

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DOI	10.1016/j.scib.2020.03.008
	Design of next-generation cross-linking structure for elastomers toward green process and a real recycling loop
	Zhang G.; Feng H.; Liang K.; Wang Z.; Li X.; Zhou X.; Guo B.; Zhang L.
发表日期	2020
ISSN	20959273
起始页码	889
结束页码	898
卷号	65 期号:11
英文摘要	Currently adopted cross-linking methods in rubber industry are suffering from variable persistent issues, including the utilization of toxic curing packages, release of volatile organic compounds (VOCs) and difficulties in the recycling of end-of-life materials. It is of great importance to explore a green cross-linking strategy in the area. Herein, we report a new “green” strategy based on hydrolyzable ester cross-links for cross-linking diene-typed elastomers. As a proof of concept, a commercial carboxylated nitrile rubber (XNBR) is efficiently cross-linked by a bio-based agent, epoxidized soybean oil (ESO), without any toxic additives. ESO exhibits an excellent plasticization effect and excellent scorch safety for XNBR. The cross-linking density and mechanical properties of the ESO-cured XNBR can be manipulated in a wide range by changing simply varying the content of ESO. In addition, zinc oxide (ZnO) performs as a catalyst to accelerate the epoxide opening reaction and improve the cross-linking efficiency, serving as reinforcement points to enhance the overall mechanical properties of the ESO-cured XNBR. Furthermore, the end-of-life elastomer materials demonstrate a closed-loop recovery by selectively cleaving the ester bonds, resulting in very high recovery of the mechanical performance of the recycled composites. This strategy provides an unprecedented green avenue to cross-link diene elastomers and a cost-effective approach to further recycle the obtained cross-linked elastomers at high efficiency. © 2020 Science China Press
关键词	Carboxylated rubber Epoxidized soybean oil Green cross-linking Recycling
英文关键词	Additives; Cost effectiveness; Crosslinking; Curing; Density (specific gravity); Efficiency; Esters; II-VI semiconductors; Olefins; Petroleum additives; Plastics; Recycling; Rubber industry; Soybean oil; Toxic materials; Volatile organic compounds; Zinc oxide; Carboxylated nitrile rubber; Cost-effective approach; Cross-linked elastomers; Cross-linking structures; Epoxidized soybean oil; Green cross-linking; Mechanical performance; Plasticization effects; Rubber
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207292
作者单位	Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China; Department of Polymer Materials and Engineering, South China University of Technology, Guangzhou, 510640, China
推荐引用方式 GB/T 7714	Zhang G.,Feng H.,Liang K.,et al. Design of next-generation cross-linking structure for elastomers toward green process and a real recycling loop[J],2020,65(11).
APA	Zhang G..,Feng H..,Liang K..,Wang Z..,Li X..,...&Zhang L..(2020).Design of next-generation cross-linking structure for elastomers toward green process and a real recycling loop.Science Bulletin,65(11).
MLA	Zhang G.,et al."Design of next-generation cross-linking structure for elastomers toward green process and a real recycling loop".Science Bulletin 65.11(2020).