A study of the effects of alkyl ketene dimer and ketone on paper sizing and friction properties

摘要

AKD, one of the most widely used sizing agents in neutral/alkaline papermaking, is reported to cause some problems to papermakers and paper end users. Calcium carbonate, if present in the furnish, is known to increase the AKD demand required to produce a desired sizing degree of the paper. Papers sized with AKD are often reported to lose their resistance to water penetration, which is known as sizing reversion. There have also been several reports that AKD sized papervS experience problems with friction properties. Therefore this study was aimed at investigating the mechanism of AKD sizing and especially understanding the reason why and how AKD makes paper slippery.