Figure 4.

Mechanical properties of CS/PEO nanofibers before and after S-coating as compared to commercial wound dressings (Control-1; Control-2): (a) Young modulus, (b) tensile strength, and (c) elongation at break (mean ± S.D.; n = 5). Since the Control-2 sample was delicate in structure, the constant value of deformation (2 mm) was applied to estimate its Young modulus and tensile strength. * represents significant differences with p ≤ 0.05, while ** and *** represents significant differences with p ≤ 0.01 and p ≤ 0.001 between uncoated formulations; †, †† and ††† symbolize significant differences with p ≤ 0.05, p ≤ 0.01 and p ≤ 0.001 between uncoated and S-coated nanofibers, respectively.