Figure 6.
Mechanical fracture force analysis of dissolving microneedles (MNs) in terms of residual water content. (A) Water content and (B) needle fracture force of PVA-based Model 2 MNs as a function of storage period. The tests were conducted at a compression speed of 0.5 mm/min using a 5 mm diameter rod. Results are expressed as mean ± SD (n = 3–4).
