ATR – IR Results
First ATR – IR spectra of the two pure coating materials were recorded. The
corresponding spectra are shown in figure 1 as the green and the blue curve. It is
quite clear that the inner coating on the paper sample (green curve in figure 1) has
only a very limited signal in the mid infrared region. In contrast to that a clear
spectrum of the outer coating of the paper sample was obtained as can be seen by the
blue curve in figure 1. The red curve in figure 1 is the FTIR spectrum of the coated
paper.