Date of Award


Degree Name

Bachelor of Science


Paper Science and Engineering


True wet strength is not a gauge of water proofness of paper, but is a measure of the residual strength of the paper gauged by the mullen, tear, burst, and fold, after the paper has been completely soaked in water and the resistance to water penetration has been completely broken (1).

To increase the wet-strength of paper, a number of different resins may be applied, and these resins may be broadly classified as anionic or cationic in nature. Of these resins, three particular resins will be discussed, cationic melamine-formaldehyde, anionic urea-formaldehyde, and cationic urea-formaldehyde.