Abstract：
Exposure of polytetrafluoroethylene (PTFE) to argon plasma results in chemical modification of the polymer near the surface. Interestingly, PTFE modification can be induced by the sub-band gap ultraviolet (UV) irradiation. In the latter case, the changes in the chemical structure are very subtle, and they are practically invisible to conventional experimental techniques. Raman spectra of irradiated and raw samples show practically identical peaks. However, the baseline that is commonly considered as an unwanted spectral component contains an important information that reflects the minor structural changes. With the proper data analysis, this allows us to visualize the effects of the argon plasma and sub-band gap UV irradiation on the polymer.
摘要：
聚四氟乙烯暴露于氩等离子体导致表面附近的聚合物的化学改性。有趣的是,PTFE改性可以通过子带隙紫外线照射来诱导。在后一种情况下，化学结构的变化非常微妙，它们对传统的实验技术几乎是不可见的。辐照样品和原始样品的拉曼光谱显示出实际上相同的峰。然而,通常被认为是不需要的光谱成分的基线，包含反映微小结构变化的重要信息。有了正确的数据分析，这使我们能够可视化氩等离子体和子带隙UV辐照对聚合物的影响。
