The chemistry of the upper monolayer of a surface can have a dramatic effect on surface wetting, biocompatibility, reactivity, and adhesion. For example, plasma processing and other gas-phase treatments are routinely used to alter the near-surface chemistry of polymer films prior to printing or adhesion steps. Similarly, organic silanes and thiol-terminated self-assembled monolayers can be applied from solution to modify the surface chemistry of glasses and metals.
Evans Analytical Group® (EAG) is well versed in the various factors that can affect surface chemistry, and thus is able to help determine the most relevant analytical approach, to obtain the best results. Many different analytical techniques are available for understanding the issues associated with surface coverage, molecular orientation, functionalization, contamination, and surface segregation.
- Fourier Transform Infrared Spectroscopy (FTIR)
- Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS)
- X-ray Photoelectron Spectroscopy (XPS) and Electron Spectroscopy for Chemical Analysis (ESCA)