COMPARISON OF REINFORCED OXYGEN DELIGNIFICATION METHODS FOR OLD CORRUGATED BOARD (OCC) FIBRES


KOÇ B. O. , GÜMÜŞKAYA E. , Erişir E. , Pesman E., KIRCI H.

DREWNO, cilt.60, ss.47-64, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

The present work focuses on the effects of sodium percarbonate and hydrogen peroxide as reinforcing agents for the oxygen delignification of old corrugated container paper (OCC). The chemical and crystalline structure, physical and mechanical properties and the optical properties were investigated in OCC papers delignified using reinforced oxygen delignification methods. The relative degradation rates were determined at 4.02% for oxygen delignification reinforced with sodium percarbonate and 0.62% for oxygen delignification reinforced with hydrogen peroxide at a 2% alkali charge. The results showed that paper sheet properties following oxygen delignification reinforced with hydrogen peroxide were better than for those following oxygen delignification reinforced with sodium percarbonate and pure sodium percarbonate. It was determined that the whiteness value was higher following oxygen delignification reinforced with sodium percarbonate rather than any of the other reinforcing agents, while the highest ISO brightness value was found following oxygen delignification reinforced with hydrogen peroxide.