Partial Replacement of Cationic Starch by Cationic Hardwood Kraft Lignin Does Not Compromise Key Paper Properties

Pre-flocculation of Precipitated Calcium Carbonate Filler by Cationic Starch for Highly Filled Mechanical Grade Paper

Three commercial starches were evaluated in conjunction with colloidal silica and flocculant to retain precipitated calcium carbonate (PCC) filler. A unique feature of this study was the fact that the filler was pre-flocculated by a portion of starch (2kg starch/t PCC) and the rest of the starch was added after the flocculant but before the silica. The pulp used was peroxide bleached thermo-mec...

Hydrophobicity of Lime Sludge Filled Paper Assisted by a Cationic Starch/CPAM/Bentonite Retention Aids System

Lime sludge is a special type of precipitated calcium carbonate (PCC) recovered from black liquor, which can be used as paper filler in the paper-making process. However, one of the biggest problems when lime sludge is used as filler is that it is difficult to hydrophobically size the filled paper, especially in the case of paper with high filler content. Also, the efficient retention of the si...

Eosinophil cationic protein concentration in saliva does not correlate with eosinophil cationic protein concentration in sputum.

compared to L-IS (n 18, p 0.02) but no difference in total cell count; all other cell types, including epithelial and squamous cells, were not significantly different between the two collections. E-IS and BAL eosinophils were significantly correlated (n 20, 0.72, p 0.0004) in all groups and in asthma alone (n 10, 0.82, p 0.004); L-IS showed weaker correlations for percentage of eosinophils with...

Interactions between Cationic Starch and Anionic Surfactants

Bulky Paper from Chemically Crosslinked Hardwood Kraft Pulp Fibers

There is a general interest among paper and board makers to produce lighter and bulkier paper and board products. The aim of the present study was to characterize chemically crosslinked hardwood kraft fibers regarding their potential in making bulky paper and board. Crosslinking agents are molecules that contain two or more reactive ends that form inter-chain covalent bonds with cellulosic hydr...