1. Starch Penetration into Paper in a Size Press.
- Author
-
Shirazi, M., Esmail, N., Garnier, G., and van de Ven, T.G. M.
- Subjects
STARCH ,PRESS ,PAPER ,SURFACE chemistry ,ADSORPTION (Chemistry) ,X-ray microscopy - Abstract
One of the surface treatments of paper is surface sizing. In this operation, hydrophobic polymers are added to paper in a size press, usually dissolved in an aqueous starch solution. We investigated the penetration of starch solutions in paper in a puddle size press. Starch penetration in paper was followed by x-ray microscopy. A mathematical model was developed, which explains the observed penetration depths. The model is an extension of the classical Lucas–Washburn theory, modified by a build-up of pressure inside the sheet during liquid penetration. The model predicts liquid penetration as a function of paper speed, nip load, viscosity of sizing solution and porosity, and surface chemistry of paper. [ABSTRACT FROM AUTHOR]
- Published
- 2004
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