Hydrogenated castor oil from castor oil is promisingly used as raw materials for lubricants, coatings, cosmetics, and pharmaceutics due to high melting point and stable physical properties. However, the chemical modification of the hydrogenated castor oil has been rarely investigated. Here, we report a N-phenyl-fatty-amido-1-propyl-N,N-dimethyl-amino-carboxyl-betaine surfactant derived from hydrogenated castor oil with excellent interfacial properties through a rapid synthetic process, including direct alkylation, amidation, and quaternization. The interfacial tension between crude oil and brine was ultra-low for a low dosage of 0.007 g L⁻¹ of surfactant in aqueous solution without any alkali addition, which implies a potential application in enhanced oil recovery.

中文翻译：

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氢化蓖麻油衍生的新型苯甲酸酯化脂肪酸两性表面活性剂，原油与盐水之间的界面张力极低

来自蓖麻油的氢化蓖麻油由于其高熔点和稳定的物理性能而有望用作润滑剂，涂料，化妆品和药物的原料。但是，很少研究氢化蓖麻油的化学改性。在这里，我们报告了一种由氢化蓖麻油衍生的N-苯基-脂肪-氨基-1-丙基-N，N-二甲基-氨基-羧基-甜菜碱表面活性剂，该表面活性剂通过快速合成工艺（包括直接烷基化，酰胺化，和季铵化。对于0.007 g L ^-1的低剂量，原油和盐水之间的界面张力极低 在不添加任何碱的情况下在水溶液中添加表面活性剂，这意味着在提高采油率方面的潜在应用。