Surface Wrinkles Induced on Oriented Chitosan Films via Horseradish Peroxidase-catalyzed Reaction and Drying

Oriented chitosan films, prepared by elongation, are applied to a surface wrinkling system via a horseradish peroxidase-catalyzed surface reaction of ferulic acid and drying. The wrinkle morphologies of the obtained films are strongly affected by drying compression stress inverse to the elongation direction, probably caused by an entropic spring. The most oriented chitosan film elongated until a fracture strain showed a herringbone-like pattern produced by parallel and orthogonal compression stresses to the orientation direction.

Automated summary

The results show that oriented chitosan films prepared by elongation can be applied to surface wrinkling systems via a horseradish peroxidase-catalyzed surface reaction of ferulic acid and drying, resulting in different wrinkle morphologies influenced by drying compression stress.