Date of Award
Bachelor of Science
Paper Science and Engineering
The object of this report is to explore the area of flotation as a means of removing hot adhesive from recycled paper stock. The major area of research resolved around choosing a surfactant capable of good performance in enhancing the flotation of adhesive and minimizing fiber loss. This surfactant was chosen by using a combination of zeta - potential studies and a flotation study in which 3 surfactants were screened. The highest performance was given by Rohm and Haas Triton N-100 followed respectively by X-114 and X-165. Even though all the surfactants had approximately the same high level of adhesive removal, the performance difference was manifest in the area of fiber loss. It was then concluded that a nonionic surfactant with a larger hydrophobic chain will have a smaller rate of fiber loss as the level of surfactant addition increases and the oxyethylene group is varied in size.
Nivison, Dennis G., "The Removal of Hot Melt Adhesives from Recycled Paper Stock by the Froth Flotation Method" (1980). Paper Engineering Senior Theses. 388.