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Responsive Membranes from Polymer-Surfactant Films

聚合物表面活性剂薄膜的响应膜

基本信息

批准号：
EP/F020546/1
负责人：
Karen Edler
金额：
$ 18.11万
依托单位：
University of Bath
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2008
资助国家：
英国
起止时间：
2008 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FF020546%2F1
关键词：
Responsive Membranes Polymer Surfactant Films

项目摘要

We have recently discovered a novel method of forming nanostructured polymer-surfactant films. They grow spontaneously at the surface of a solution containing the two species, and are sufficiently thick and solid to remove them from the surface. They retain their ordered nanostructure during this procedure and we have shown it is possible to incorporate small hydrophobic molecules into the ordered nanostructure during film formation. In this proposal we want to investigate these fascinating membranes further using X-ray and neutron scattering techniques at ISIS, the ESRF and Diamond, and this presents an ideal training opportunity for a PhD student to learn about these techniques for analysing nanoscale structures, as well as about these novel polymer-surfactant films. The student will receive training in small angle scattering and reflectivity, two methods which allow us to analyse structure in films and solutions. As part of their project they will investigate the effect of changing the surfactant molecular structure on the nanostructures formed in the film, and then will go on to prepare films which are re-inforced by crosslinking the polymer component in the film. We will prepare films using polymers which are responsive to changes in temperature or pH to make membranes which swell or shrink to selectively release molecules trapped in the film during synthesis. We will also incorporate monomers into the surfactant nanostructure during film formation, followed by polymerisation of these monomers to create a replica of the soft surfactant structures in the film. This will allow us to prepare polymer nanostructures which are hard to prepare from normal solutions, and which will further reinforce the polymer-surfactant membrane to make it more robust. This will enhance the ability to recover it from the surface and use it in applications. Finally we will study the incorporation of micelle based fluorescent sensor molecules into the membranes to make solid sensors for determination of metal ions to show that it it possible to retain the sensing properties of these solution based sensors in a solid film form which could be more easily used than the solutions eg in dip stick type sensors.

我们最近发现了一种形成纳米结构聚合物-表面活性剂膜的新方法。它们在含有这两种物质的溶液的表面自发生长，并且足够厚和固体以将它们从表面去除。他们保留其有序的纳米结构在此过程中，我们已经表明，它是可能的，将小疏水分子到有序的纳米结构在膜形成过程中。在这个提案中，我们希望在ISIS，ESRF和Diamond进一步使用X射线和中子散射技术研究这些迷人的膜，这为博士生提供了一个理想的培训机会，以了解这些用于分析纳米结构的技术，以及这些新型聚合物表面活性剂膜。学生将接受小角度散射和反射率的培训，这两种方法使我们能够分析薄膜和溶液的结构。作为他们项目的一部分，他们将研究改变表面活性剂分子结构对薄膜中形成的纳米结构的影响，然后将继续制备通过交联薄膜中的聚合物组分而增强的薄膜。我们将使用聚合物制备薄膜，这些聚合物对温度或pH值的变化有反应，使膜膨胀或收缩，以选择性地释放合成过程中被困在薄膜中的分子。我们还将在成膜过程中将单体掺入表面活性剂纳米结构中，然后聚合这些单体以在膜中产生软表面活性剂结构的复制品。这将使我们能够制备难以用普通溶液制备的聚合物纳米结构，并且将进一步增强聚合物-表面活性剂膜，使其更加坚固。这将提高从表面回收它并在应用中使用它的能力。最后，我们将研究将基于胶束的荧光传感器分子掺入膜中，以制成用于测定金属离子的固体传感器，以表明可以以固体膜形式保留这些基于溶液的传感器的传感特性，这可以更容易地使用比溶液，例如在浸入棒型传感器中。