New approach for utilization of cellulose derivatives metal complexes in preparation of durable and permanent colored papers

This work focused on studying the used of polymer complexes as a new approach for the preparation of high performance colored paper. In this respect, the paper strength, thermal stability, biological resistance, magnetic properties, as well as the durability of aged paper were evaluated. It was found that, using carboxymethyl cellulose–copper complexes [CMC–Cu(II)], as paper additive, enhances the strength properties of wood pulp paper sheet, and depends on the anion of the copper salt used and the pH-value during the preparation process. The best polymer complex is that produced from using copper sulfate as the origin of copper ion, at pH 5.4. Also, incorporating the CMC–Cu(II) complexes with wood pulp provides thermal stability, fire retardancy, biological resistance, magnetism, as well as durability to the paper sheets obtained.