- Author
-
Nguyen, T.
|
Byrd, W. E.
|
Bentz, D.
- Title
- Quantifying Water at the Coating/Substrate Interface.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Book or Conf
- American Chemical Society (ACS). Phase Division Proceedings. Volume 66. April 1992,
414-415 p.,
1992
- Keywords
-
water
|
substrates
|
coatings
|
blistering
|
delamination
|
corrosion
- Abstract
- Water at the polymer coating/substrate interface causes degradation of polymer coated materials. The most visible effects are blistering and delamination when polymer coated materials are exposed to high relative humidities or immersed in aqueous solutions. For metal substrates, water is also one of the main ingredients necessary for corrosion reactions to occur. Further, the presence of a water layer at the coating/metal interface is essential for the corrosion process to spread. Measurement of water at the polymer coating/substrate interface is the subject of great interest in many industries such as organic coatings, electronic packaging, and asphalt pavements. In previous publications, we reported the development of a technique based on Fourier transform infrared - multiple internal reflection (FTIR-MIR) spectroscopy for studying in situ water at the polymer/metal interface. In this paper, we describe the use of this technique to quantify the water layer at the polymer coating/substrate interface. Quantitative information on water at the coating/substrate interface will enhance our understanding of the controlling factors in and the mechanisms of blistering, delamination, and corrosion of polymer coated materials.