生物表面活性剂在稳定油微滴的高效率在毫秒的衰老时间尺度内:微流体研究
Zhi-Yuan Yang1, Shi-Zhong Yang1,2, Gang-Zheng Sun3,4
1State Key Laboratory of Bioreactor Engineering and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Meilong 130, 200237 Shanghai, P. R. China.
Soft matter
|August 7, 2024
概括
与合成表面活性剂8-SCBS相比,生物表面活性剂表面活性素 (C15-SFT) 在稳定油微滴方面表现优越. 这一发现对于理解快速乳化过程和开发有效的生物表面活性剂至关重要.
科学领域:
- 表面化学 表面化学
- 体科学 体科学 体科学
- 生物技术是生物技术.
背景情况:
- 表面活性剂在接口的快速吸附对于高效的乳化至关重要,这种过程与大规模运输相竞争.
- 与合成表面活性剂相比,像表面活性剂 (C15-SFT) 这样的生物表面活性剂以快速吸附和界面张力降低而闻名.
- 之前的研究表明,表面素有可能在毫秒时间范围内稳定微滴.
研究的目的:
- 对生物表面活性剂C15-SFT和合成表面活性剂8-SCBS的微滴稳定能力进行比较研究.
- 评估衰老时间和表面活性剂度对微滴稳定性的影响.
- 为了阐明脂在乳化中的早期活性.
主要方法:
- 使用微流体方法评估n-hexadecane微滴的稳定性.
- 评估了微滴凝聚频率,尺寸演变和凝聚时间.
- 在不同老化时间 (例如150毫秒,600毫秒) 和表面活性剂度 (例如0.1 × CMC,1 × 10−3 mol L−1) 的性能比较.
主要成果:
- 在稳定n-hexadecane微滴方面,C15-SFT显著优于8-SCBS.
- C15-SFT降低了滴滴聚变概率和延长凝聚时间,特别是在较短的老化时间和较低度下.
- 用C15-SFT在600毫秒的老化时间和1 × 10−4mol L−1度实现了稳定的微滴,与8-SCBS不同.
结论:
- 生物吸附剂C15-SFT形成了更强的界面膜,增强了微滴稳定性,防止凝聚.
- 该研究证实了C15-SFT在快速乳化过程中的有效性,其性能优于8-SCBS.
- 这些发现为生物表面活性剂在增强石油回收和环境修复中的应用提供了基础.
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