pH可切换微乳液:最大限度地减少盐的形成,以提高切换的可逆性
Bo Zhu1, Hui Chen1, Liwen Shi1,2
1Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical & Materials Engineering, Jiangnan University, Wuxi 214122, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|March 13, 2025
概括
这项研究引入了新型pH切换微乳液 (ME),使用三乙烯酸 (C12TEA) 表面活性剂,显著减少盐副产品,以提高W / O,BC和O / W相切换的可逆性.
科学领域:
- 合体和表面化学
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
背景情况:
- 盐的积累阻碍了pH诱导微乳液 (ME) 的可逆性.
- 由于大量的盐副产品形成,现有的pH切换ME面临限制.
- 开发稳定和可逆的ME对于可持续的化学过程至关重要.
研究的目的:
- 用于制造具有高度可逆的pH切换微乳液 (ME) 以最小化的盐副产品.
- 为了证明离子交换在减少盐形成方面的有效性.
- 探索这些ME作为聚合物的可回收介质的应用.
主要方法:
- 使用三乙胺酸盐 (C12TEA) 作为一种可切换pH的表面活性剂,用于ME施工.
- 实施了离子交换策略,以减少副产品盐的92.9-99.0%.
- 研究了水在油 (W/O),双连续 (BC) 的可逆切换. ) 和油入水 (O/W) ME阶段.
主要成果:
- 成功制造了pH切换的C12TEA-ME,具有超过10个可逆脱乳化/微乳化循环.
- 从W/O到BC实现了平稳的相位逆转. 在pH切换过程中转换为O/W.
- 证明了用于 styrene 聚合物的可回收反应介质性能,具有可重复的结果和狭窄的分子量分布.
结论:
- 最小化的盐形成显著提高了pH切换微乳液的可逆性.
- 开发的C12TEA-ME提供了一个可持续和可回收的反应介质.
- 这种方法为设计用于技术应用的先进pH切换ME提供了宝贵的参考.
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