Journal of South China University of Technology (Natural Science Edition) ›› 2018, Vol. 46 ›› Issue (2): 93-101.doi: 10.3969/j.issn.1000-565X.2018.02.014

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Plasticizer Prepared by Catalytic Epoxidation of Soybean Oil Based on Deep Eutectic Ionic Liquid
 

 CHANG Jie WANG Ju LIU Yong ZHOU Zhining FU Yan    

  1.  School of Chemistry and Chemical Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
  • Received:2017-05-25 Revised:2017-07-31 Online:2018-02-25 Published:2018-01-02
  • Contact: 常杰( 1968-) ，男，教授，博士生导师，主要从事生物基材料与能源方面的研究 E-mail:changjie@scut.edu.cn
  • About author:常杰( 1968-) ，男，教授，博士生导师，主要从事生物基材料与能源方面的研究
  • Supported by:
    Supported by the National Natural Science Foundation of China( 21476090) ， the National Key Ｒesearch and Development Program of China( 2017YFD0601003) and the Science and Technology Planning Project of Guangdong Province， China ( 2017A010104005) 

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Abstract:  In order to improve the efficiency of epoxidation，the environmentfriendly plasticizer was synthetized by catalytic epoxidation of soybean oil in solventfree system when deep eutectic ionic liquid was used as the acidic phase transfer catalyst，with choline chloride ( ChCl) being a hydrogen bond acceptor and oxalic acid dihydrate in molar ratio of 1∶ 1 and peroxyformic acid being oxygen supplying agent． The effects of reaction temperature，reaction time，catalyst，hydrogen peroxide，and formic acid dosage on epoxide yield of raw oil by the single factor experiment were investigated． The product prepared under the optimal conditions had light color with the high epoxide yield of 90. 32% and epoxy value of 6. 85%． The quality of product conformed to Chinese national standard， and the catalyst was easily separated and recycled． The characterization results from Fourier transform infrared spectroscopy ( FTIＲ) and nuclear magnetic resonance spectroscopy ( 1H NMＲ) showed that the conversion of unsaturated double bonds in raw material oil was basically complete with the high epoxide yield and excellent selectivity; thermal analysis ( TG-DSC) proved the prepared epoxidized plasticizer along with the initial decomposition temperature of 265℃ formed the trend to lose its weight until temperature was just above 223℃，respectively，displaying the better thermal stability

Key words: choline chloride, oxalic acid, catalyst, deep eutectic ionic liquid, soybean oil, plasticizer 

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