Date of Award


Degree Name

Bachelor of Science


Paper Science and Engineering


The paper industry is one of the largest users of commercial starch in the world. Starch has many uses in the papermaking process, including coating operations. In coating, starch has two main purposes: to work as a binder and to give desired rheological properties to the pigmented paper coating. Research was done examine the effects of three different starches on the rheological properties of pigmented paper coatings. The three starches were com, wheat, and potato. These starches were modified using the enzyme conversion process. The converted starches were added to the coating formulas and then tested for high and low shear rate viscosity. The Hercules and Brookfield Viscometers were used to measure the corresponding viscosities and thixotropy. The evaluation showed that the potato starch had the greatest effect on the viscosity and thixotropy of the coatings, followed by the wheat and the corn.