硫生物基齐特基表面活性剂中的β-基组提高了其对界面活动的热耐受性
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Updated: May 15, 2025

Enhanced Oil Recovery using a Combination of Biosurfactants
Published on: June 3, 2022
Wei Wang1, Hong-Ze Gang1,2,3, Homely Isaya Mtui1
1State Key Laboratory of Bioreactor Engineering and School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China.
引入基团增强了生物基的zwitterionic表面活性剂,改善了它们在恶劣条件下的性能. 这一发现为有效的接口应用提供了新的可能性.
科学领域:
- 表面活性剂化学 表面活性剂化学
- 材料科学 材料科学 材料科学
- 生物质利用生物质的利用
背景情况:
- 水友性头组显著影响生物基兹威特基表面活性剂的性能.
- 已知基团会影响界面活动,但潜在的机制需要进一步研究.
研究的目的:
- 合成和评估两种新型生物基齐维特基表面活性剂,含有不同基含量.
- 阐明基团在提高在具有挑战性的条件下表面活性剂性能方面的作用.
主要方法:
- 从甲基酸盐中合成基于anisole的甲基酸乙烯基酸硫四级盐 (AEHSQA) 和基于anisole的甲基酸乙烯基酸硫四级盐 (AESPQA).
- 在不同温度和Ca2+度下测量界面张力.
- 分子动力学模拟 (MDS) 用于分析界面行为.
主要成果:
- 使用额外的β-基组,AEHSQA实现了高达120°C和2500 mg/L Ca2+的超低界面张力 (<10-2 mN/m).
- AESPQA显示耐受性较低,性能仅限于90°C和250 mg/L Ca2+.
- 通过保持水友性和界面稳定性,MDS指示的基团通过保持水友性和界面稳定性来改善热和盐耐受性.
结论:
- 基基团的存在显著提高了生物基齐特基表面活性剂的热和盐耐受性.
- 这种结构修改在不利条件下改善了油水界面上的表面活性剂的稳定性.
- 这些发现为设计高性能生物基表面活性剂提供了有价值的见解,用于苛刻的应用.
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