Preparation and characterization of a new white magnetic paper.

The white magnetic paper is a kind of promising functional materials in many fields. In this paper, a new high white magnetic paper had been successfully prepared by lumen loading process using Tb-based inorganic magnetic particles. The samples were characterized by superconductivity quantum interference device (SQUID), scanning electron microscope (SEM) and physical properties. The effect of the addition of magnetic particles on the physical properties of magnetic paper was investigated in detail. SEM micrograph clearly shown that the magnetic particles had attached evenly in the interstitial of fibers and lumen loading allowed magnetic particles to be introduced into the lumens of wood fibers. And SQUID indicated that the magnetic particles and papers were paramagnetic materials. The results of physical properties of magnetic papers indicated that the tensile strength and tearing strength of papers increased firstly and then decreased with increasing addition of magnetic particles. Meanwhile, the whiteness of papers was improved obviously which was greater than 80% in contrast to other papers produced by adding ferrite. [ABSTRACT FROM AUTHOR]