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，例如用于抑制碳氢化合物通过聚合物的扩散或改变聚合物表面的润湿性。通常情况下，要氟化的组件在反应器中受到单质氟的影响，其中组件在氟可以接触到的任何地方都被氟化。还提出了一种具体的氟化方法，其中使用了一种非反应性含氟前体和两种紫外线源，但几乎没有使用。如果氟化必须局部化，则无论采用何种方法，总是需要更多的处理步骤。通常，在不进行氟化处理的区域进行时间和成本密集的遮盖。可生产区域的最小尺寸本身是有限的。为了避免对局部氟化进行耗时和劳动密集型的掩蔽，本文将研究一种混合氟化方法，其中局部氟化在单一工艺步骤中进行。该项目的目的是开发用于聚合物表面局部氟化的新混合方法的基本原理。新的杂化氟化技术结合了两种已有的技术，即气相氟化工艺和紫外辐照改性聚合物的表面。这两个过程同时发生，从而利用协同效应。通过这种方法，可以产生以其他方式无法产生的结构，例如在疏水表面内的局部亲水结构。在第一个资助期内，研究的主要重点是证明基于局部紫外激光的聚合物表面氟化的可行性。最初提议的供资期限为3年，其中最初只批准了1.5年，并与一个里程碑有关：必须提供基于紫外激光的局部氟化的可行性证明。现在可以用所研究的方法证明聚合物表面局部氟化的可行性。在第二个筹资期间，计划按照原来的提议继续进行。特别是局部氟化的边界将被确定。在第一个资助期内，除了气相氟化之外，还出现了液相氟化的想法。这保证了一个更锋利的局部氟化。这些调查也将在这里适用的第二阶段进行。

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.