PAPER CHEMISTRY: STUDY ON ACTION OF STRENGTHENING AND DRAINAGE ADDITIVES
Abstract
The article provides a study of the effect of strengthening and drainage additives based on synthetic and natural polyelectrolytes on papermaking, turbidity, zeta potential and strength properties of handsheets. Object of study is the paper pulp from prescreened OCC wastepaper. On the basis of experimental data obtained, the authors have identified the interaction of wastepaper pulp with chemical additives depending on their structure and charge density. It is shown that the maximum strength and drainage of wastepaper pulp is observed at low negative zeta potential of secondary fibers. The data obtained can be used in the stock preparation for assessment of the dosage and effectiveness of strengthening and drainage additives.
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