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Paper Information

Journal:   IRANIAN JOURNAL OF WOOD AND PAPER SCIENCE RESEARCH   SUMMER 2018 , Volume 33 , Number 2 (63) #p00538; Page(s) 256 To 269.

The potential of GL as a cationic polymer to control the stickies of OCC pulp

Author(s):  Ahmadi Ladjimi A., AZADFALLAH M.*, RAHMANINIA M., HAMZEH Y.
* Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran
Stickies are among the major obstacles in paper recycling mills. This substance deposits on paper machine components and initiates break in the paper web as well as loss of end product quality. So, it is necessary to control the stickies and limits its detrimental effects. It is known that cationic polymers as fixing agents can control the stickies efficiently. Therefore, the control of stickies of OCC pulp using a commercial cationic polymer called GL at 0. 4, 0. 8 and 1. 2 percent based on oven dry weight of pulp at pH 4 and pH 5 were investigated. Macro-and micro-stickies, dissolved and colloid substances (DCS), turbidity, and drainage time were measured to evaluate GL efficiency and compared with control sample. The results indicated that GL dosing at 0. 4 and 0. 8 percent in pH 4 and 7 due to flocculation and fixing the stickies onto the fiber caused to decrease in macro stickies, microstickies and DCS while improved the drainage time. However, no efficient performance was observed in controlling stickies at higher content of GL i. e. 1. 2 percent. Generally, it is concluded that with consuming at desired pH and dosage, GL can be used as efficient agent to control stickies in processing of OCC pulp.
Keyword(s): Stickies,cationic polymer,OCC pulp,flocculation
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