Hydrogel-Crosslinked Microneedles Based on Microwave-Assisted Drying Method

Figure 7

ATR-FTIR spectra of non-crosslinked, conventionally crosslinked, and MW crosslinked hydrogels (a). Using conventional (b) and microwave-assisted (c) crosslinking methods, ATR-FTIR with different crosslinking times was investigated.

(a)

(b)

(c)