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EFFECT OF ZIRCONIUM INSOLUBILIZERS ON SILICA COATING RHEOLOGY
 

Summary: EFFECT OF ZIRCONIUM INSOLUBILIZERS ON
SILICA COATING RHEOLOGY
BURAK AKSOY, MARGARET JOYCE, and PAUL D. FLEMING III
Department of Paper Engineering, Chemical Engineering and Imaging
Western Michigan University
Kalamazoo MI 49008
Keywords:
Inkjet coatings, inkjet coating additives, crosslinkers, waterfastness, viscous moduli,
elastic moduli.
ABSTRACT
Zirconium species are used in inkjet coatings to improve the waterfastness of the
coating and print quality by reducing the ink spread and excessive ink migration into the
coated layer. We investigated the effect of two anionic zirconium complexes, ammonium
zirconium carbonate (AZC) and potassium zirconium carbonate (KZC), on the rheology
of a gel-silica/PVOH inkjet coating. Both zirconium species had an influence on the
rheological properties of the coating and its components. The interactions between the
zirconium salts and the coating were found to be weak and lessened as the shear rate
increased. The viscous modulus was higher than the elastic modulus indicating more
fluid like behavior.
INTRODUCTION

  

Source: Abubakr, Said - Department of Paper Engineering, Chemical Engineering, and Imaging, Western Michigan University

 

Collections: Engineering