Fluid imbibition into PMETAC functionalized mesoporous films

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-05-16 DOI:10.1016/j.colsurfa.2025.137184

Laura Czerwenka, Annette Andrieu-Brunsen

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引用次数: 0

Abstract

Fluid imbibition into nanoporous films is of relevance in water harvesting, separation, or sensing. Furthermore, grafting polymers from the mesopore walls affects the wettability and ionic accessibility of mesoporous films. Using poly[2-(methacryloyloxy)ethyltrimethylammonium chloride] (PMETAC) functionalized mesoporous films we observe that the imbibition of aqueous salt solutions depends on many parameters such as the fluid, the mesopore structure, polymer ion interaction and osmotic effects. Specifically, we observe that the imbibition length depends on the salt concentration and the type of salt as well as on the presence of PMETAC. We identified the PMETAC influence on an osmotically driven, self-amplified fluid pumping mechanism using PMETAC functionalized mesoporous silica films. The presence of the polyelectrolyte PMETAC offers a further parameter to tune fluid imbibition into mesoporous films, especially in the presence of interacting ions. The results give insights on how to design porous materials with applications in sensor or separation technology or in material system design e.g. looking at material exchange between drop compartments.

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PMETAC功能化介孔膜的流体吸吮

流体吸吸进入纳米孔膜是相关的水收集，分离，或传感。此外，介孔壁接枝聚合物会影响介孔膜的润湿性和离子可及性。利用聚[2-（甲基丙烯氧基）乙基三甲基氯化铵]（PMETAC）功能化介孔膜，我们观察到盐水溶液的吸胀取决于许多参数，如流体、介孔结构、聚合物离子相互作用和渗透效应。具体来说，我们观察到吸胀长度取决于盐的浓度和盐的类型以及PMETAC的存在。我们利用PMETAC功能化的介孔二氧化硅膜确定了PMETAC对渗透驱动、自放大流体泵送机制的影响。聚电解质PMETAC的存在提供了一个进一步的参数来调节介孔膜的流体吸胀，特别是在相互作用离子存在的情况下。研究结果为如何在传感器或分离技术或材料系统设计中应用多孔材料设计提供了见解，例如观察滴舱之间的材料交换。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.