Effect of Temperature and pH on the Fracture of Toner Due to Paper Swelling, 1997 Recycling Symposium Proceedings

Improvements in the deinking of toner-printed paper have been hampered by a lack of understanding of the mechanisms occurring during recycling processes. These mechanisms are difficult to study largely due to the complexity of the system. To analyze the initial step of repulping, this work studied the fracture of the toner layer resulting from paper swelling only. Observations of toner-printed paper upon immersion in water showed that significant fracture of toner can occur due to paper swelling. Below the glass transition temperature of the toner, fracture was evident. Above this temperature, fracture was virtually non-existent. This is due to the change of the toner from a brittle to a rubbery material. The pH did not affect the fracture.

Author: Vander Wielen, L., Panek, J. C., Pfromm, P. H.
Effect of Temperature and pH on the Fracture of Toner Due to
Effect of Temperature and pH on the Fracture of Toner Due to Paper Swelling, 1997 Recycling Symposium Proceedings
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