Fig. 3.
Tensile strength after double crosslinking. MPa: tensile stress at break (kgf/width 5 mm). GA: glutaraldehyde, De: decellurarization, EDC: ethyl-dimethylaminopropyl carbodiimide hydrochloride, NHS: N-hydroxysucinimide, DPPA: diphenylphosphoryl azide, DIA: Hexane-1-6 diamine, SUA: suberic acid, Pro: procyanidin.