柱层析分离-气相色谱法测定脂肪酸甲酯乙氧基化物中二酯含量
GC Determination of Di-esters in Methyl Ester Ethoxylates of Fatty Acids with Column Chromatographic Separation
摘 要
采用硅胶柱层析-气相色谱法对月桂酸甲酯乙氧基化物(LME)中副产物二酯进行了定量分离与测定,同时考察了不同条件下合成的LME中二酯含量的变化规律。结果表明:LME中二酯含量随环氧乙烷(EO)加合数(n)的增加而先增大后趋平衡,当加合数n为8时,其质量分数为2.13%;并随反应温度升高而增大;随原料甲酯所含碳原子个数增加而降低。
二酯
月桂酸甲酯乙氧基化物
脂肪酸甲酯乙氧基化物
Column chromatography
Di-esters
Lauric acid methyl ester ethoxylates
Methyl ester ethoxylates of fatty acid
Abstract
Column chromatography was applied to the separation and GC determination of by-products of di-esters in lauric acid methyl ester ethoxylates (LME). The law of change of content of di-esters was studied when LME was synthesized under different conditions. The content of di-esters in LME was found to increase gradually and attained to equilibrium with the increase of addition number (n) of ethylene oxide (EO), and the content of di-esters found was 2.13% when n was 8. In addition, the content of di-esters was found to increase with the increase of reaction temperature, but to decrease with the increase of carbon atom number in the raw material of methyl ester.
中图分类号 O657.7
所属栏目
基金项目 “十一五”国家科技支撑计划项目(2007BAE52B00)
收稿日期 2010/3/9
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备注吴文清(1984-),男,四川乐山人,硕士,主要从事表面活性剂行业和工业催化行业相关研究。
引用该论文: WU Wen-qing,SUN Yong-qiang,TIAN Chun-hua,LIU Guang-yu,SHI Xiu-qi,ZhANG Yong. GC Determination of Di-esters in Methyl Ester Ethoxylates of Fatty Acids with Column Chromatographic Separation[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2011, 47(4): 461～463
吴文清,孙永强,田春花,刘广宇,史修启,张勇. 柱层析分离-气相色谱法测定脂肪酸甲酯乙氧基化物中二酯含量[J]. 理化检验－化学分册, 2011, 47(4): 461～463
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参考文献
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【3】BEHLER A, SYLDATH A. Fatty acid methyl ester ethoxylates-a new class of nonionic surfactants［C］. Firenze: CESIO, 2000:382．
【4】罗毅,孙永强,田春花,等.脂肪酸甲酯乙氧基化物的物化性能研究［J］.日用化学工业, 2001,31(5):5-7．
【5】赵国玺,朱步瑶.表面活性剂作用原理［M］.北京:轻工业出版社, 2003:38-48．
【6】SIWEK Z, HRECZUCH W, SZYMANOWSKI J, et al. Comparative gas chromatography analysis of ethoxylated fatty acid methyl esters with packed and capillary columns［C］. Champaign USA: AOCS, 1999,273-283．
【7】COX M F, WEERASOORIYA U. Impact of molecular structure on the performance of methyl ester ethoxylates［J］. Journal of Surfactants and Detergents, 1998,1(1):11-12．
【8】马利静,周卯星,冯瑜.脂肪酸甲酯乙氧基化物的气相色谱分析［J］.色谱, 2004(1):84-86．
【9】李得志,孙永强,杨秀全,等.蓖麻油甲酯乙氧基化物的合成及物化性能［J］.精细石油化工, 2006(4):54-57．
【2】HAMA I, OKAMOTO T, NAKAMURA H. Preparation and properties of ethoxylated fatty methyl ester nonionics［J］. Journal of the American Oil Chemists Society, 1995,72(7):781-784．
【3】BEHLER A, SYLDATH A. Fatty acid methyl ester ethoxylates-a new class of nonionic surfactants［C］. Firenze: CESIO, 2000:382．
【4】罗毅,孙永强,田春花,等.脂肪酸甲酯乙氧基化物的物化性能研究［J］.日用化学工业, 2001,31(5):5-7．
【5】赵国玺,朱步瑶.表面活性剂作用原理［M］.北京:轻工业出版社, 2003:38-48．
【6】SIWEK Z, HRECZUCH W, SZYMANOWSKI J, et al. Comparative gas chromatography analysis of ethoxylated fatty acid methyl esters with packed and capillary columns［C］. Champaign USA: AOCS, 1999,273-283．
【7】COX M F, WEERASOORIYA U. Impact of molecular structure on the performance of methyl ester ethoxylates［J］. Journal of Surfactants and Detergents, 1998,1(1):11-12．
【8】马利静,周卯星,冯瑜.脂肪酸甲酯乙氧基化物的气相色谱分析［J］.色谱, 2004(1):84-86．
【9】李得志,孙永强,杨秀全,等.蓖麻油甲酯乙氧基化物的合成及物化性能［J］.精细石油化工, 2006(4):54-57．
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