... linear aminopolysaccharide of 1-4 ȕ-D-glucosamine derived from chitin by deacetylation. Chitin (linear 1-4 ȕ-N-acetyl-D-glucosamine polysaccharide) exists mainly as a structural polymer in the ... able to reinforce the natural bonding of fibres. Expectedly, the reinforcing mechanism also include the self-crosslinking of the polymers, at least to some extent, since the crosslinking reactions ... additives in papermaking include e.g. poly(acrylamide), polyvinylamine, and different wet strength resins: urea-formaldehyde (UF), melamine-formaldehyde (MF), and poly(amideamine) epichlorohydrin...