Novel Paper Sizing Agents Based on Renewables. Part 6: Sizing Properties of Maleated High Oleic Sunflower Oil

Abstract

The sizing efficiency of maleated high oleic sunflower oil (MSOHO), a green reactive sizing agent, was studied in various sizing tests. MSOHO can be applied in the papermaking process according to protocols that are commonly used for the currently popular alkenyl succinic anhydride (ASA) sizing. While an adequate degree of sizing was reached with pure MSOHO, blends of MSOHO and fatty acid anhydride (FAA), another green sizing agent, gave even better results, coming close to the efficiency of pure ASA. Although both pure sizing agents - FAA as well as MSOHO - lack some efficiency when compared to ASA, blending those two sizing agents at an optimum ratio closes this gap with respect to ASA. This synergism was not caused by simply decreasing the viscosity of MSOHO. Blends of ASA-MSOHO and ASA-MSOHO-FAA were proposed for full-scale mill trials.

Keywords:

• Alkenyl succinic anhydride (ASA)
• fatty acid anhydride (FAA)
• maleated high oleic sunflower oil (MSOHO)
• paper sizing
• viscosity

Acknowledgments

The financial support of the Austrian Christian-Doppler Research Society (Lab for Advanced Cellulose Chemistry and Analytics) is gratefully acknowledged. Kemira Chemie GesmbH is gratefully acknowledged for access to the maleation, sizing, and testing equipment. We thank Katharina Auer, Thomas Plaichner, Michaela Braun, Karin Lechner, and Rene Klement for skillful practical assistance.