Paper-making Chitosan

Chitosan contains amido and carboxyl, and has excellent film forming performance. Thus, it can be applied in water resistance of paper. 　Chitosan is a linetype substance of high molecular weight, and has enough bonding strength and linkage function among fibers, so it can be used as intensifier and retention aid. 　The molecular weight and chemical structure of chitosan is similar to that of fibrin. It shows positive electricity in water solution, with certain cation