探测表面间活性和非活性青的界面行为及其对乳液稳定性的影响
Xiaohui Mao1, Chenyu Qiao2, Ziqian Zhao2
1College of Materials Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai 201620, PR China.
Journal of colloid and interface science
|July 12, 2024
概括
表面间活性青素 (IAA) 是比表面间非活性青素 (INAA) 更有效的乳液稳定剂. IAA需要更低的度来稳定托卢中的水滴,突出了它在乳液形成中的独特作用.
科学领域:
- 石油科学 石油科学 石油科学
- 合体和表面科学科学
- 材料科学 材料科学 材料科学
背景情况:
- 青是原油中发现的复杂混合物.
- 截然不同的青子部分表现出不同的界面行为.
- 了解这些行为对于解释油水乳液稳定至关重要.
研究的目的:
- 为了将整个青分离为界面活性 (IAA) 和非活性 (INAA) 的子部分.
- 综合调查IAA和INAA的组成,形态,尺寸,吸附和界面特性.
- 阐明青素分片在稳定油水乳液中的作用.
主要方法:
- 整个青的分离成IAA和INAA.
- 先进的纳米机械技术用于表征.
- 在水-托卢接口上测量吸附和接口行为.
- 测量表面力和稳定度的量化.
主要成果:
- 与INAA (6 nm) 相比,IAA具有更高的氧含量和更大的尺寸 (60 nm).
- IAA形成的薄膜比INAA更厚 (在上≤5.5nm,在中≤46nm) (在上≤1nm,在中≤3.1nm).
- IAA表现出优越的界面活性和粘弹性特性,在显著较低的度下稳定乳液 (10 mg/L对 INAA 100 mg/L).
结论:
- 青亚分片,特别是IAA和INAA,表现出明显不同的界面特性.
- 由于其增强的界面活性和薄膜形成能力,IAA是油中的水乳液的更强大的稳定剂.
- 这项研究提供了关于青驱动乳液稳定机制的关键见解.
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