Structuring of polymer surfaces for micro- and biotechnical applications by hybrid UV-Laser-Fluoration

表面氟化已经使用了一段时间，例如，用来抑制碳氢化合物在聚合物中的扩散或改变聚合物表面的润湿性。典型地，待氟化的组件在反应器中经受元素氟，其中组件在任何地方都被氟化，在那里它可被氟访问。还提出了一种具体的氟化方法，其中使用了一种非反应性的含氟前驱体和两个紫外源，但几乎没有使用过。如果必须进行局部氟化，则无论采用何种方法，始终需要更多的工艺步骤。通常，在不进行氟化的区域进行耗时和成本密集的遮盖。可生产区域的最小尺寸是有限的。为了避免局部氟化的耗时和劳动强度的掩蔽，这里将研究一种混合氟化方法，其中局部氟化是在一个工艺步骤中进行的。该项目的目的是开发一种新的用于聚合物表面局部氟化的混合方法的基本原理。新的混合氟化技术结合了两项成熟的技术，即气相氟化过程和通过紫外线照射对聚合物进行表面改性。这两个过程同时发生，从而利用了协同效应。通过这种方法，可以产生其他方式不能产生的结构，例如疏水表面内的局部亲水结构。在第一个资助期，研究的主要重点是证明基于局部UV激光的聚合物表面氟化的可行性。最初建议的资助期为3年，其中最初只批准了1.5年，这与一个里程碑有关：必须提供基于紫外光激光的局部氟化的可行性证明。现在可以使用所研究的方法提供局部氟化的可行性证明。在第二个资助期，计划继续按照原来的提议进行。特别是将确定局部氟化的边界。在第一个供资期间，除了气相氟化外，还出现了液态氟化的想法。这预示着一场更加尖锐的局部氟化。这些调查也将在这里应用的第二阶段进行。

Surface fluorinations have been used for some time, for example to inhibit diffusion of hydrocarbons through a polymer or change the wettability of a polymer surface. Typically, the component to be fluorinated is subjected to elemental fluorine in a reactor, wherein the component is fluorinated everywhere, where it is accessible by the fluorine. A specific method for the fluorination, in which a non-reactive fluorine-containing precursors and two UV sources are used also has been presented, but has hardly been used. If the fluorination has to be localized, always more process steps are required, regardless of the method. Often, a time- and cost-intensive masking is carried out on the areas not to be fluorinated. The minimum size of the producible areas is inherently limited.To avoid the time-consuming and labor-intensive masking for the localized fluorination, a hybrid fluorination method will be examined here, where the localized fluorination is carried out in a single process step.The aim of the project is the development of the fundamentals of a new hybrid method for localized fluorination of polymer surfaces. The new hybrid fluorination technique combines two established technologies, the process of gas-phase fluorination and the surface modification of polymers by UV irradiation. Both processes take place at the same time, whereby synergistic effects are utilized. By this, structures can be produced which cannot be generated in other ways, such as localized hydrophilic structures within a hydrophobic surface.In the first funding period, the main focus of the research was the proof of feasibility of a local UV laser-based fluorination of polymer surfaces. The originally proposed funding period was amounted to 3 years, of which at first only 1.5 years were approved and were associated with a milestone: The proof of feasibility of the UV-laser based local fluorination had to be provided.The proof of feasibility of localized fluorination a polymeric surface could now be provided with the investigated method. In the second funding period is it planned to continue in accordance with the original proposal. Especially the boundaries of the local fluorination will be determined. During the first funding period, besides gas-phase fluorination the idea of a liquid phase fluorination arose. This promises a far more sharp-edged local fluorination. These investigations will also be carried out in the second phase applied here.