文献类型：期刊文献

中文题名：凝胶色谱与紫外分析桐油甲酯D-A反应的研究

英文题名：Study on conversion rate of methyl ester D-A reaction by gel chromatography and UV analysis

作者：李科[1,2,3,4] 蒋剑春[1,2,3,4,5] 聂小安[1,2,3,4,5] 陈洁[1,2,3,4] 黄金瑞[1,2,3,4] 陈水根[1,2,3,4]

第一作者：李科

通信作者：Li, Ke

机构：[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室;[4]江苏省生物质能源与材料重点实验室;[5]中国林业科学研究院林业新技术研究所

年份：2017

卷号：36

期号：1

起止页码：40-46

中文期刊名：化工进展

外文期刊名：Chemical Industry and Engineering Progress

收录：CSTPCD;;EI(收录号：20171003422303);Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2017_2018】；

基金：中央级公益性科研院所基本科研业务费专项(CAFYBB2014MA011);江苏省生物质绿色燃料与化学品重点实验室项目(JSBGFU14007)

语种：中文

中文关键词：D-A反应;凝胶色谱;紫外;桐油;增塑剂

外文关键词：D-A reaction; gel chromatography; UV; tung oil; plasticize

分类号：TQ645.1;O657

摘要：选用具有高共轭脂肪酸含量的桐油与马来酸二异辛酯作为二烯体与亲二烯体,研究了合成C_22-三元酸一甲二辛酯增塑剂的工艺并探讨了酮油甲酯与马来酸二异辛酯D-A反应转化率的计算问题。通过对比分析得率、凝胶色谱、紫外3种测试方法,结果表明得率、凝胶色谱、紫外都可作为检测手段评估D-A反应的进行程度。其中得率误差较大,凝胶色谱计算转化率较为准确,紫外可利用270nm处的吸收判断反应程度,可是计算结果偏大,但可利用各波段吸收特征有效判断反应类型;综合分析凝胶色谱与紫外的结果得出桐油甲酯与马来酸二异辛酯的D-A反应最佳合成条件为桐油甲酯与马来酸二异辛酯在摩尔比为1∶1时,在220℃下反应5h,转化率为97.4%。
Tung oil with conjugated fatty acids and diisooctyl maleate were employed as raw materials to study the synthetic process of C22-tricarboxylic diisooctyl-monomethyl ester and conversion rate calculation of D-A reaction of methyl eleostearate and diisooctyl maleate. Three test methods were used including analysis of yield,gel chromatography,and ultraviolet. The test results showed that all three methods can be used to evaluate the progress of D-A reaction. However,the yield measurement was least accurate. The gel chromatography was the most precise to calculate conversion rate. The UV method could calculate the 270 nm absorption reaction progress but the calculation results was too high. The UV method was able to use the band absorption characteristics to judge the reaction type effectively. Combining the analytical results from the gel chromatography and UV concluded that the optimum technological conditions were：the molar ratio of tung oil methyl ester to diisooctyl maleate is 1∶1,the reaction temperature is 220℃,reaction time is 5h,and the conversion of tung oil methyl ester can be up to 97.4%.