Kontrolle des Benetzungsverhaltens von Polymeren auf oberflächenverankerten Polymermonolagen

表面锚定聚合物单层上聚合物润湿行为的控制

• 批准号: 5107960
• 负责人: Professor Dr. Jürgen Rühe
• 金额: --
• 依托单位: Lehrstuhl Chemie und Physik der Grenzflächen
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 1998
• 资助国家: 德国
• 起止时间: 1997-12-31 至 2002-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5107960?language=en
• 关键词: Kontrolle; des; Benetzungsverhaltens; von; Polymeren

In the project described in the submitted proposal we want to study the wetting properties of polymers in contact with substrates with tailor-made surface coatings. Chemical composition and structure of the substrates will be controlled through polymer monolayers covalently attached to the surfaces of substrates. The surface-attached polymer layers will be generated either by using self-assembled monolayers of initiators and growth of the polymer chains at the surface in situ ("grafting from") or through photochemical "docking" procedures, in which preformed polymers are covalently linked to the substrate ("grafting to"). A from a structural point of view similar system, which will be studied, is based on the attachment of polymers through chemical reactions at several, randomly distributed points along the backbone, which will lead to chain conformations with several anchor-points along the chain. Depending on the graft density and the strength and nature of interactions with the substrate surface "pancake" coil or "brush"-like conformations of the surface-attached polymer chains can be obtained. In addition to the monolayers ultrathin, surface-attached networks will be studied. The conformation of the chains is expected to have a very strong influence onto the wetting properties of the system.For all systems it will be studied, how the chain topology of the surface-attached chains influences the wetting properties of the system. Through systematic variation of the layer composition and the molecular weight of the polymer molecules as well as the anchor density of the tethered chains we want to develop protocols, which allow to control the wetting behavior of solid substrates with high precision.

在提交的提案中描述的项目中，我们希望研究与具有定制表面涂层的基材接触的聚合物的润湿性能。基质的化学组成和结构将通过共价连接到基质表面的聚合物单层来控制。表面附着的聚合物层将通过使用引发剂的自组装单层和聚合物链在表面原位生长（“接枝自”）或通过光化学“对接”程序产生，其中预形成的聚合物共价连接到基底（“接枝到”）。从结构的角度来看，将要研究的类似系统是基于聚合物通过化学反应在沿着主链的几个随机分布的点处的附着，这将导致沿着链具有几个锚定点的链构象。取决于接枝密度和与基底表面的相互作用的强度和性质，可以获得表面附着的聚合物链的“饼”卷或“刷”样构象。除了单分子膜外，还将研究表面附着网络。对于所有体系，研究了表面附着链的拓扑结构对体系润湿性的影响.通过系统地改变层组成和聚合物分子的分子量以及系链的锚密度，我们希望开发允许以高精度控制固体基底的润湿行为的方案。