Nucleophilic amino acids as a renewable alternative to petrochemically-derived amines in glycerol epoxy resins  

作　　者：Yunyi Liang Yonghong Luo Yingji Wu Xiaona Li Quyet Van Le Jianzhang Li Changlei Xia 

机构地区：[1]Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,International Innovation Center for Forest Chemicals and Materials,College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China [2]Department of Materials Science and Engineering,Institute of Green Manufacturing Technology,Korea University,Seoul 02841,South Korea

出　　处：《Journal of Bioresources and Bioproducts》2024年第2期222-232,共11页生物质资源与工程（英文）

基　　金：funded by the National Key R&D Program of China(No.2022YFD2200105).

摘　　要：The standard epoxy resin curing agents revealed are from unsustainable petroleum-based sources,which produce poisonous exhaust when cured.Amino acids,a bio-based epoxy curing agent with amino and carboxyl groups,are another potential curing agent.Water-soluble epoxy resins cured with lysine(Lys),glutamic acid(Glu),leucine(Leu),and serine(Ser)as amino acids were inves-tigated.The results showed that the water-soluble epoxy resin(glycerol epoxy resins,GER)was cured with Lys and Glu after reacting.Fourier transform infrared(FT-IR)spectroscopic analysis of the GER-Lys showed that the amino and carboxyl groups of Lys primarily reacted with the epoxy groups of GER.The elongation at break of Lys-cured GER(GER-Lys)cured at 70℃ with a molar ratio of 1꞉0.75 was 75.32%.The fact that elongations at break of GER-Lys(79.43%)were higher than those of GER-Glu(17.33%),respectively supports the decrease of crosslinking density by the amino acid-cured GER reaction.The potential of Lys and Glu alternatives for petrochemical amines is demonstrated and provides promising opportunities for industrial application.

关 键 词：Curing agent Amino acids Bio-based epoxy resins LYSINE Glutamic acid 

分 类 号：O62[理学—有机化学]