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Chemical structures of main synthetic and natural wet strength.
| Wet Strength Agents | |||
|---|---|---|---|
| Synthetic Resin | Structure | Natural Resin | Structure |
| Polyamidemine-epichlorohydrin (PAE) |
|
Starch |
|
| Melamine formaldehyde (MF) |
|
Cationic starch |
|
| Polyacrylamide (PAM) |
|
Chitosan |
|
| Glyoxylated polyacrylamide (GPAM) |
|
Cellulose nanofibrils (CNF) |
|
| Polyethyleneimine (PEI) |
|
Soy protein | - |
| Polyvinylamine (PVAm) |
|
Lignin |
|
