菜籽油酸乙醇酰胺聚氧乙烯醚的合成及性能研究

以聚乙二醇(400)为原料，通过三步合成了菜籽油酸乙醇酰胺聚氧乙烯醚。首先按照菜籽油酸：乙醇胺(1t001)=1：0．75，催化剂KOH：菜籽油酸(mol)：0．076：1，0，温度为170℃，加入乙醇胺反应4h，再加入乙醇胺，使总的菜籽油酸：乙醇胺(mol)=1：1．0，在105℃反应3h得到菜籽油酸乙醇酰胺。然后，在碱性条件下，酰胺与环氧氯丙烷反应生成环醚。最后环醚与聚乙二醇(400)反应生成聚氧乙烯醚。正交试验确定较佳工艺条件为：环醚：聚乙二醇(mol)为1：1．2，反应时间3h，反应温度140℃产品收率达92％。通过红外光谱确定了产品的结构，并对产品的表面物性进行了分析。结果 表明产品具有较好的降低水表面张力的能力，并具有良好的增稠润湿性能。

Synthesis and Properties of Rapic Acid Ethanolamide Polyoxyethylene Ether

Rapic acid ethanolamide polyoxyethylene ether was synthesized using polyglycol. Rapic acid ethanolamide was obtained as follow: n(Rapic acid):n(ethanolamine)=1.0:0.75(in the first step) and l:0.25(in the second step), n(Rapic acid ):n(KOH)= 1.0:0.076, reaction temperature 170 C (in the first step) and 105 C (in the second step) and reaction time 4h(in the first step) and 3h(in the second step). And then ring ether was synthesized in the presence of alkali. Rapic acid ethanolamide polyoxyethylene ether was prepared by ring ether and polyglycol using KOH as catalyst. The optimum reaction conditions were as follow: n(ring ether):n(polyglycol)=1.0:1.2, reaction temperature 140 C and reaction time 3h by orthogonal experiment. The yield of the product reached 92%. The structure of the product was determined by IR spectra and the properties ,such as surface tension, thickening and wetting of the product were determined. The result indicated that the Rapic acid ethanolamide polyoxyethylene ether was a fine non-ionic surfactant.