Preparation of Modified Kaolin Filler with Cesium and Its Application in Security Paper

<table>FTIR spectra for three nonirradiated wood paper handsheets. A: paper loaded with 12% kaolin, B: paper loaded with 12% Cs-kaolin, and C: paper without kaolin.</table>

Advances in Materials Science and Engineering

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Figure 4

Figure 4: Preparation of Modified Kaolin Filler with Cesium and Its Application in Security Paper 