通过阴离子表面活性剂和正电荷氧化纳米片的pH/离子双响应乳液
Pei Zhu1,2, Juan Chen1, Yanfen Ding1
1Beijing National Laboratory for Molecular Science, Key Laboratory of Engineering Plastics, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|March 1, 2024
概括
研究人员开发了一种新的,稳定的乳液,使用了阴离子表面活性剂和正电荷的氧化纳米片. 这种双响应系统可以通过pH或离子变化进行切换,为控制药物输送和催化提供了潜力.
科学领域:
- 合体和表面科学科学
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
背景情况:
- 传统的乳液往往需要高度的乳化剂,导致环境和毒性问题.
- 由体颗粒稳定的皮克林乳液提供了一个有希望的替代品,特别是当表面活性颗粒与离子表面活性剂相互作用时.
- 关于由类似电荷粒子和表面活性剂稳定化的乳液的研究有限.
研究的目的:
- 使用阴离子表面活性剂和类似的带电纳米颗粒,创建稳定的水中的六乳液.
- 为了研究 cetyltrimethylammonium化物 (CTAB) 和氧化物 (MH) 纳米片之间的协同稳定机制.
- 为了证明开发系统的双切换式乳化/脱乳化能力.
主要方法:
- 使用低度的CTAB (阴离子表面活性剂) 和正电荷的MH纳米片制备水中的六乳液.
- 通过分析电力排斥,机械屏蔽和片状水排水,对乳液稳定性的表征.
- 通过操纵pH值和离子度来证明可切换的乳化/脱乳化.
主要成果:
- 使用CTAB和MH纳米板的协同效应,成功制备了稳定的乳液.
- 乳液稳定性归因于静电排斥,纳米薄膜的物理屏障效应,以及凝诱导的水排水抑制.
- 乳液表现出双重反应性,允许通过pH和离子度调整进行可逆乳化和脱乳化.
结论:
- 开发的CTAB-MH纳米板系统提供了一个稳定的,成本稳定的乳液,具有可调节的特性.
- 乳液的双反应性,由pH和离子控制,为精确的应用开辟了道路.
- 这项技术在药物输送和双相生物催化剂中具有重要的先进应用潜力.
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