Figure 4.
(a) Dry (patterned black) and wet (red) tensile strength of cotton linter paper coated with keto-HPC DOx1.5 in combination with PEI, KL-DETA and PEI, respectively. (b) Dry (patterned black) and wet (red) tensile strength of cotton linter paper coated only with keto-HPC DOx1.5, PEI, chitosan or KL-DETA as reference measurements. Untreated lab-made paper of cotton linter fibers with a grammage of 100 g m−2 was used as untreated paper reference.
