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| 菜籽油酸制备C21二元酸及其衍生物性能的研究 |
| Preparation of C21 dicarboxylic acid from rapeseed oleic acid and performance of its derivative |
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| DOI： |
| 中文关键词: 菜籽油酸 亚油酸 C21二元酸 表面活性剂 |
| 英文关键词:rapeseed oleic acid linoleic acid C21 dicarboxylic acid surfactant |
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| 中文摘要: |
| 以菜籽油酸为原料，通过Diels Alder反应得到C21二元酸，经提纯、中和制备C21二元酸钠表面活性剂。采用质谱对C21二元酸进行分析，并对C21二元酸钠的表面性能进行研究。结果表明：以产物中亚油酸含量为指标，得到最佳反应条件为亚油酸与碘质量比 1∶0.002、亚油酸与丙烯酸摩尔比 1∶1.2、反应温度240?℃，在此条件下产物中亚油酸含量低于1%；C21二元酸钠表面活性剂的临界胶束浓度为5.75×10-3 mol/L，表面张力可达37.98 mN/m，与月桂酸钠性能相当。 |
| 英文摘要: |
| With rapeseed oleic acid as raw material, the C21 dicarboxylic acid was obtained by Diels Alder addition reaction, and C21 dicarboxylic acid sodium surfactant was synthesized by purification and neutralization. The C21 dicarboxylic acid was analyzed by mass spectrum, and the surface properties of C21 dicarboxylic acid sodium were studied. The results showed that with the content of linoleic acid in the product as index, the optimal reaction conditions were obtained as follows: mass ratio of linoleic acid to iodine 1∶?0.002, molar ratio of linoleic acid to acrylic acid 1∶1.2 and reaction temperature 240?℃. Under these conditions, the content of linoleic acid in the product was less than 1%.The critical micelle concentration (CMC) of the C21 dicarboxylic acid sodium surfactant was 5.75×10-3 mol/L and the surface tension (γ) reached 37.98 mN/m, which was comparable to the performance of sodium laurate. |
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