XPS Study on the Effects of Pigment on the UV Degradation of an Epoxy System.
XPS Study on the Effects of Pigment on the UV
Degradation of an Epoxy System.
Scierka, S.; Forster, A.; Kosik, W.
Federation of Societies for Coatings Technology (FSCT)
Technical Program Annual Meeting, 81st. November 12-14,
2003, Philadelphia, PA, Federation of Societies for
Coatings Technology, Blue Bell, PA, 2003.
degradation; pigment; epoxy; ATR-FTIR; x-ray
X-ray photoelectron spectroscopy (XPS) is a powerful
tool that has been used to monitor the changes in
chemistry on the surface of many materials. In this
study it is used to examine the chemical changes in an
epoxy system formulated with and without pigment (TiO2)
after ultraviolet (UV) exposure to further explain the
role of pigment in polymer degradation. The effect epoxy
degradation as a function of surface treatment on the
pigment and pigment concentration was also investigated.
The individual components, the epoxy and pigment, will
be analyzed separately in an effort to understand the
changes observed for the entire system (pigmented
epoxy). XPS results show that chemical changes have
occurred on the epoxy surface and that the type of
pigment does affect the extent of degradation. The
concentration of pigment appears to have no effect on
the extent of degradation.