The waste newspaper, sustainable resource of raw material paper product

Limitation in cellulosic raw materials and environmental laws to decrease of the exploitation of forests and so limited pollutants, especially the industrial pollutants is occasion for use of recycle papers. But the strength properties of papers are very important. The aim of this study is increasing the strength properties of recycled paper. In this research the newspaper specimen selected randomly and after pulping and deinking, refined and divided to two groups. In one of these groups with only adding cationic starch (2%), standard papers were made (evidence sample). The other group treated at first with different percentages of hydrogen peroxide (2%, 3%, 4%) under the alkalin conditions and then the oxidize fibers treated with cationic starch (2%) and finally made standard paper from them and measured the strength properties according to a TAPPI standard. This study showed that hydrogen peroxide treatment increased the strength properties of recycle newspaper. Uttermost increase was related to treatment of hydrogen peroxide 3%, while least of strength properties were related to evidence sample.