智能乳液通过耐受高度酸和盐的多头组表面活性剂稳定
Wanqing Zhang1, Bernard P Binks2, Jianzhong Jiang1
1The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Material Engineering, Jiangnan University, 1800 Lihu Road, 214122, Wuxi, China.
Angewandte Chemie (International ed. in English)
|August 20, 2023
概括
一种新型表面活性剂,di-UAPAc,在恶劣条件下稳定乳液. 它的pH触发的转化可以控制乳液类型,粘度和滴滴大小,用于石油回收和废水处理的应用.
科学领域:
- 合体和表面科学科学
- 材料化学 材料化学
- 表面活性剂化学 表面活性剂化学
背景情况:
- 在高酸度和盐度下稳定乳液存在重大挑战.
- 传统的表面活性剂在恶劣的环境条件下经常失败.
研究的目的:
- 引入一种新的多头组表面活性剂,di-UAPAc,能够进行可逆的pH依赖转化.
- 通过使用二-UAPAc和纳米粒子在极端条件下证明油分散 (OID) 乳液的稳定性.
- 为了探索OID和皮克林乳液之间的pH触发的相互转换.
主要方法:
- 多头组表面活性剂di-UAPAc.的合成和表征.
- 在酸性和盐酸性介质中制备和稳定性测试OID乳液.
- 通过键对纳米颗粒的表面活性剂吸附的研究.
- 分析由盐度和pH引起的乳液类型转化 (OID到Pickering).
- 通过pH调节控制乳化,脱乳化,粘度和滴滴大小.
主要成果:
- 迪-UAPAc表现出可逆的阴离子,阳离子和离子形式,pH值变化.
- 在pH 2下使用低度的二-UAPAc和纳米颗粒实现了稳定的OID乳液.
- 在pH 2的高盐度增强了二-UAPAc在二氧化上的吸附,导致皮克林乳液的形成.
- 成功地证明了pH触发的乳化/脱乳化和OID-Pickering相互转换.
- 通过调整pH值来实现对粘度和滴滴大小的调节控制.
结论:
- 新型表面活性剂di-UAPAc为在具有挑战性的水性环境中稳定乳液提供了一个多功能平台.
- 本研究提出了设计表面活性剂的新策略,用于在石油回收和废水处理等恶劣介质中的应用.
- 由于di-UAPAc的pH反应性,可以动态控制乳液性质和类型.
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