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Effects of water content on the dissolution behavior of wool keratin using 1-ethyl-3-methylimidazolium dimethylphosphate
Zhang, Zhenlei1,2; Zhang, Xiaochun1; Nie, Yi1,3; Wang, Hui1; Zheng, Shuangshuang3; Zhang, Suojiang1

Ionic liquids (ILs) are eco-friend and recyclable solvents for dissolution of wool keratin, and water is often used as antisolvent to regenerate keratin from IL solution. To recycle the ILs, removing water is the necessary step. However, complete removal of the water is energy-intensive and costly. The water in ionic liquids would change the physicochemical properties and cluster structures of the IL and further affect its dissolution behavior on keratin. Here, 1-ethyl-3-methylimidazolium dimethylphosphate ([Emim]DMP) was used for experiments due to its good performance on dissolving keratin. The experimental and simulation results showed that the dissolving capability of [Emim]DMP was decreased and the interactions between cation and anion became weaker with water concentration increasing. Furthermore, the dissolution time of wool keratin in [Emim]DMP increased with water content rising. At the same time, the effect of water in ILs on the secondary structure distribution and thermal stability of regenerated keratin was not obvious. In this work, by taking the structures of [Emim]DMP, keratin dissolution time and properties of the regenerated keratin into consideration, a balanced range of water content in [Emim]DMP was determined, which could not only reduce recycling cost but also not affect the dissolution behavior of the IL.

KeywordKeratin Ionic Liquids Water Recycle
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS KeywordMolecular-dynamics Simulations ; Ionic Liquids ; Disulfide Bonds ; Force-field ; Solvents ; Proteins ; Desulfurization ; Temperature ; Diffusion ; Cellulose
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(21576262) ; National Natural Science Fund for Distinguished Young Scholars(21425625) ; International Cooperation and Exchange of the National Natural Science Foundation of China(51561145020) ; Key Research Program of Frontier Sciences, CAS(QYZDY-SSW-JSC011)
WOS IDWOS:000404713100011
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Key Lab Green Proc & Engn, Beijing Key Lab Ionic Liquids Clean Proc, State Key Lab Multiphase Complex Syst,Inst Proc E, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
3.Zhengzhou Inst Emerging Technol Ind, Zhengzhou 450000, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Zhenlei,Zhang, Xiaochun,Nie, Yi,et al. Effects of water content on the dissolution behavior of wool keratin using 1-ethyl-3-methylimidazolium dimethylphosphate[J]. SCIENCE CHINA-CHEMISTRY,2017,60(7):934-941.
APA Zhang, Zhenlei,Zhang, Xiaochun,Nie, Yi,Wang, Hui,Zheng, Shuangshuang,&Zhang, Suojiang.(2017).Effects of water content on the dissolution behavior of wool keratin using 1-ethyl-3-methylimidazolium dimethylphosphate.SCIENCE CHINA-CHEMISTRY,60(7),934-941.
MLA Zhang, Zhenlei,et al."Effects of water content on the dissolution behavior of wool keratin using 1-ethyl-3-methylimidazolium dimethylphosphate".SCIENCE CHINA-CHEMISTRY 60.7(2017):934-941.
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