Date of Award
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.
Redmond, Walter J., "The Retention of Wet Strength Resins as Determined by the Kjeldahl Method" (1952). Paper Engineering Senior Theses. 438.