Polymers

In this note we present quantitative NAP XPS results from a polytetrafluoroethylene (PTFE) sample using the EnviroESCA. A PTFE sample was analyzed in oxygen and water vapor atmospheres at pressures ranging from 1 mbar to 15 mbar. This study demonstrates the ability of NAP XPS to deliver reliable quantification results after correcting the photoelectron attenuation in the ambient gas atmosphere.

The high resolution capability of the PHOIBOS 150 MCD-9 analyzer, the FOCUS 500 monochromator and the FG 15/40 flood gun was demonstrated by XPS measurements on a PET (Polyethylene terephthalate) surface.

This application note describes how EnviroESCA can be used to analyze the surface of polymers and bulk insulating material. EnviroESCAs ability to perform X-Ray Photoelectron Spectroscopy (XPS) at non vacuum conditions shows its main advantage when being applied to insulating material. Specimens that tend to charge up under vacuum conditions and need to be extensive charge compensated with expensive low energy electron and low energy ion sources can be measured with ease and without the problem of overcompensation.

In this application note we analyze the surface of water filled hydrogels with EnviroESCA, Here, contact lenses serve as an example for medical and biomaterials. The advantage of such investigations under non ultrahigh vacuum conditions is demonstrated and results from wet and dry samples are compared.

In this study we show how EnviroESCA can be used to analyze the surface of superabsorbent polymers under different environmental conditions. EnviroESCA’s ability to perform X-ray Photoelectron Spectroscopy (XPS) under ambient conditions shows its main advantage when being applied to insulating material that change their surface (chemistry) when they come in contact with different liquids and gases - in this case water. Specimens that tend to charge up under vacuum conditions can be measured with ease.